Upgrade to Webpack 5

[kuasha420]

Summary

Addresses issue:

Relevant technical choices

PR Author Checklist

• [ ] My code is tested and passes existing unit tests.
• [ ] My code has an appropriate set of unit tests which all pass.
• [ ] My code is backward-compatible with WordPress 4.7 and PHP 5.6.
• [ ] My code follows the WordPress coding standards.
• [ ] My code has proper inline documentation.
• [ ] I have added a QA Brief on the issue linked above.
• [x] I have signed the Contributor License Agreement (see https://cla.developers.google.com/).

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Do not alter or remove anything below. The following sections will be managed by moderators only.

Code Reviewer Checklist

• [ ] Run the code.
• [ ] Ensure the acceptance criteria are satisfied.
• [ ] Reassess the implementation with the IB.
• [ ] Ensure no unrelated changes are included.
• [ ] Ensure CI checks pass.
• [ ] Check Storybook where applicable.
• [ ] Ensure there is a QA Brief.

Merge Reviewer Checklist

• [ ] Ensure the PR has the correct target branch.
• [ ] Double-check that the PR is okay to be merged.
• [ ] Ensure the corresponding issue has a ZenHub release assigned.
• [ ] Add a changelog message to the issue.

[github-actions[bot]]

Size Change: -18.1 kB (0%)

Total Size: 6.22 MB

Filename	Size	Change
./dist/assets/css/googlesitekit-admin-css-********************.min.css	48.2 kB	-12 B (0%)
./dist/assets/css/googlesitekit-adminbar-css-********************.min.css	11.1 kB	+1 B (0%)
./dist/assets/js/31-********************.js	0 B	-2.8 kB (removed)	🏆
./dist/assets/js/32-********************.js	0 B	-2.28 kB (removed)	🏆
./dist/assets/js/33-********************.js	0 B	-3.72 kB (removed)	🏆
./dist/assets/js/34-********************.js	0 B	-51.9 kB (removed)	🏆
./dist/assets/js/35-********************.js	0 B	-879 kB (removed)	🏆
./dist/assets/js/36-********************.js	0 B	-3.38 MB (removed)	🏆
./dist/assets/js/37-********************.js	0 B	-605 kB (removed)	🏆
./dist/assets/js/38-********************.js	0 B	-3.12 kB (removed)	🏆
./dist/assets/js/analytics-advanced-tracking-********************.js	393 B	-376 B (-49%)	🎉
./dist/assets/js/googlesitekit-activation-********************.js	28 kB	-5 B (0%)
./dist/assets/js/googlesitekit-adminbar-********************.js	38.2 kB	+7 B (0%)
./dist/assets/js/googlesitekit-api-********************.js	9.23 kB	+41 B (0%)
./dist/assets/js/googlesitekit-base-********************.js	1.14 kB	+10 B (+1%)
./dist/assets/js/googlesitekit-dashboard-********************.js	65.1 kB	+985 B (+2%)
./dist/assets/js/googlesitekit-dashboard-details-********************.js	56.3 kB	+1.11 kB (+2%)
./dist/assets/js/googlesitekit-dashboard-splash-********************.js	70.9 kB	+573 B (+1%)
./dist/assets/js/googlesitekit-data-********************.js	2.08 kB	-7 B (0%)
./dist/assets/js/googlesitekit-datastore-forms-********************.js	8.9 kB	+74 B (+1%)
./dist/assets/js/googlesitekit-datastore-location-********************.js	2.11 kB	+23 B (+1%)
./dist/assets/js/googlesitekit-datastore-site-********************.js	15 kB	+153 B (+1%)
./dist/assets/js/googlesitekit-datastore-ui-********************.js	9 kB	+79 B (+1%)
./dist/assets/js/googlesitekit-datastore-user-********************.js	29.1 kB	-859 B (-3%)
./dist/assets/js/googlesitekit-i18n-********************.js	3.88 kB	-37 B (-1%)
./dist/assets/js/googlesitekit-idea-hub-notice-********************.js	41.2 kB	-3.82 kB (-8%)	✅
./dist/assets/js/googlesitekit-idea-hub-post-list-********************.js	26.1 kB	+88 B (0%)
./dist/assets/js/googlesitekit-modules-adsense-********************.js	66.6 kB	-2.78 kB (-4%)
./dist/assets/js/googlesitekit-modules-analytics-********************.js	66.7 kB	-2.44 kB (-4%)
./dist/assets/js/googlesitekit-modules-analytics-4-********************.js	19.3 kB	+277 B (+1%)
./dist/assets/js/googlesitekit-modules-********************.js	19.9 kB	+410 B (+2%)
./dist/assets/js/googlesitekit-modules-idea-hub-********************.js	28.1 kB	+195 B (+1%)
./dist/assets/js/googlesitekit-modules-optimize-********************.js	19.3 kB	-98 B (-1%)
./dist/assets/js/googlesitekit-modules-pagespeed-insights-********************.js	18.2 kB	-179 B (-1%)
./dist/assets/js/googlesitekit-modules-search-console-********************.js	38.5 kB	-775 B (-2%)
./dist/assets/js/googlesitekit-modules-tagmanager-********************.js	29.4 kB	-1.02 kB (-3%)
./dist/assets/js/googlesitekit-modules-thank-with-google-********************.js	23.9 kB	-281 B (-1%)
./dist/assets/js/googlesitekit-polyfills-********************.js	395 B	+17 B (+4%)
./dist/assets/js/googlesitekit-settings-********************.js	50.3 kB	+385 B (+1%)
./dist/assets/js/googlesitekit-user-input-********************.js	44.7 kB	-168 B (0%)
./dist/assets/js/googlesitekit-vendor-********************.js	313 kB	-10.5 kB (-3%)
./dist/assets/js/googlesitekit-widgets-********************.js	19.5 kB	+174 B (+1%)
./dist/assets/js/googlesitekit-wp-dashboard-********************.js	60.5 kB	-489 B (-1%)
./dist/assets/js/runtime-********************.js	2 kB	+661 B (+49%)	🚨
./dist/assets/js/15-********************.js	51.9 kB	+51.9 kB (new file)	🆕
./dist/assets/js/164-********************.js	3.84 kB	+3.84 kB (new file)	🆕
./dist/assets/js/181-********************.js	3.38 MB	+3.38 MB (new file)	🆕
./dist/assets/js/270-********************.js	2.97 kB	+2.97 kB (new file)	🆕
./dist/assets/js/337-********************.js	3.13 kB	+3.13 kB (new file)	🆕
./dist/assets/js/559-********************.js	879 kB	+879 kB (new file)	🆕
./dist/assets/js/736-********************.js	2.37 kB	+2.37 kB (new file)	🆕
./dist/assets/js/836-********************.js	605 kB	+605 kB (new file)	🆕

ℹ️ View Unchanged

Filename	Size
./dist/assets/css/googlesitekit-wp-dashboard-css-********************.min.css	5.96 kB

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