Bump org.webjars:bootstrap from 3.3.7 to 4.3.1 in /springboot2-webapp-jsp-WAR

[dependabot[bot]]

Bumps org.webjars:bootstrap from 3.3.7 to 4.3.1.

Commits

• b29e729 [maven-release-plugin] prepare release bootstrap-4.3.1
• 4d99c1c bump to 4.3.1 - fixes #94
• 3db306d [maven-release-plugin] prepare for next development iteration
• 4966c0b [maven-release-plugin] prepare release bootstrap-4.2.1
• 5591b7a bump to 4.2.1 - fixes #86
• b018180 [maven-release-plugin] prepare for next development iteration
• 2b23ae2 [maven-release-plugin] prepare release bootstrap-4.1.3
• cb650cb bump popper
• e2bf8b0 [maven-release-plugin] prepare for next development iteration
• a76d38b [maven-release-plugin] prepare release bootstrap-4.1.2
• Additional commits viewable in compare view

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