Allow observer subdomain to call the /postcode-lookup endpoint

[tjmw]

What are you doing in this PR?

Allow observer subdomain to call the /postcode-lookup endpoint.

Why are you doing this?

Postcode lookup functionality is currently broken on the observer subdomain.

How to test

On the checkout, enter a postcode and click "Find address". Instead of the button disappearing and returning no results, you should be presented with the results, and be able to select one.

[github-actions[bot]]

[!IMPORTANT] Don't forget to label your PR with one of the following labels: maintenance, feature, fix.

[github-actions[bot]]

Size Change: 0 B

Total Size: 1.5 MB

ℹ️ View Unchanged

Filename	Size
./support-frontend/public/compiled-assets/javascripts/[countryGroupId]/events/router.js	105 kB
./support-frontend/public/compiled-assets/javascripts/[countryGroupId]/router.js	145 kB
./support-frontend/public/compiled-assets/javascripts/ausMomentMap.js	107 kB
./support-frontend/public/compiled-assets/javascripts/contributionsRedirectStyles.js	20 B
./support-frontend/public/compiled-assets/javascripts/downForMaintenancePage.js	75.2 kB
./support-frontend/public/compiled-assets/javascripts/error404Page.js	75.2 kB
./support-frontend/public/compiled-assets/javascripts/error500Page.js	75.1 kB
./support-frontend/public/compiled-assets/javascripts/favicons.js	43 B
./support-frontend/public/compiled-assets/javascripts/paperSubscriptionLandingPage.js	98.2 kB
./support-frontend/public/compiled-assets/javascripts/payPalErrorPage.js	74.2 kB
./support-frontend/public/compiled-assets/javascripts/payPalErrorPageStyles.js	20 B
./support-frontend/public/compiled-assets/javascripts/promotionTerms.js	81.1 kB
./support-frontend/public/compiled-assets/javascripts/subscriptionsLandingPage.js	104 kB
./support-frontend/public/compiled-assets/javascripts/unsupportedBrowserStyles.js	20 B
./support-frontend/public/compiled-assets/javascripts/weeklySubscriptionLandingPage.js	102 kB
./support-frontend/public/compiled-assets/webpack/143.js	13.1 kB
./support-frontend/public/compiled-assets/webpack/241.js	4.25 kB
./support-frontend/public/compiled-assets/webpack/299.js	3.32 kB
./support-frontend/public/compiled-assets/webpack/308.js	33.3 kB
./support-frontend/public/compiled-assets/webpack/430.js	5.54 kB
./support-frontend/public/compiled-assets/webpack/442.js	6.82 kB
./support-frontend/public/compiled-assets/webpack/533.js	30.2 kB
./support-frontend/public/compiled-assets/webpack/650.js	4.36 kB
./support-frontend/public/compiled-assets/webpack/678.js	5.76 kB
./support-frontend/public/compiled-assets/webpack/709.js	109 kB
./support-frontend/public/compiled-assets/webpack/724.js	18 kB
./support-frontend/public/compiled-assets/webpack/754.js	9.24 kB
./support-frontend/public/compiled-assets/webpack/762.js	4.64 kB
./support-frontend/public/compiled-assets/webpack/8.js	19.4 kB
./support-frontend/public/compiled-assets/webpack/862.js	3.15 kB
./support-frontend/public/compiled-assets/webpack/checkout.js	23 kB
./support-frontend/public/compiled-assets/webpack/GuardianAdLiteLanding.js	13.8 kB
./support-frontend/public/compiled-assets/webpack/LandingPage.js	17.4 kB
./support-frontend/public/compiled-assets/webpack/oneTimeCheckout.js	7.46 kB
./support-frontend/public/compiled-assets/webpack/StudentLandingPageGlobalContainer.js	1.74 kB
./support-frontend/public/compiled-assets/webpack/StudentLandingPageUTSContainer.js	1.94 kB
./support-frontend/public/compiled-assets/webpack/ThankYou.js	118 kB

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[github-actions[bot]]

Deploy build 17276 of support::stripe-patrons-data to CODE

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• Deploy build 17276 of support::stripe-patrons-data to CODE
• Deploy parts of build 17276 to CODE by previewing it first
• What's on CODE right now?

---

From guardian/actions-riff-raff.

[github-actions[bot]]

Deploy build 26540 of support:support-workers-mono to CODE

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• Deploy build 26540 of support:support-workers-mono to CODE
• Deploy parts of build 26540 to CODE by previewing it first
• What's on CODE right now?

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From guardian/actions-riff-raff.

[gu-prout[bot]]

Seen on PROD (merged by @tjmw 10 minutes ago)

• Keep an eye out for the post deployment Playwright smoke tests github action
• If the tests have failed, the post deployment test runbook should help troubleshoot.

Sentry Release: support-client-side, support