Bump slim/slim from 3.12.0 to 3.12.1

[dependabot-preview]

Bumps slim/slim from 3.12.0 to 3.12.1.

Release notes

Sourced from slim/slim's releases.

3.12.1

Total issues resolved: 8

• 2572: Add initial MAINTAINERS document thanks to @​akrabat
• 2576: make sure HEAD requests do not return a body thanks to @​lordrhodos
• [2586: Fix for #2568](https://github-redirect.dependabot.com/slimphp/Slim/pull/2586) thanks to @​l0gicgate
• 2609: Fix incorrect return type hints on NotFound handler thanks to @​rbairwell
• 2619: Update copyright year to 2019 thanks to @​odan
• 2625: Remove references to unused EnvironmentInterface thanks to @​jdrieghe
• 2629: Remove charset=utf-8 parameter from withJson() method thanks to @​l0gicgate
• 2630: Remove ; charset=utf-8 from Response::withJson() thanks to @​chadicus

Commits

• eaee12e Merge branch '3.12.1-Release' into 3.x
• a94f31a Update VERSION to 3.12.1
• 9e1e727 Merge pull request #2630 from chadicus/issue2629
• c311bf2 Remove ; charset=utf-8 from Response::withJson()
• f0718f6 Merge branch 'remove-pointless-environment-interface' into 3.x
• b1c689b Make sure the container always has an instance of Environment
• 14555a1 Merge pull request #2619 from odan/3.x
• f055d4e Update copyright year to 2019
• 7b9967f Merge pull request #2609 from rbairwell/patch-1
• 2cf98e9 Fix return type hints
• Additional commits viewable in compare view

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Comment review ?

Comme toute PR dependabot, la review est plus qu'anecdotique, même si ça ne fait pas de mal de passer dessus. Le but est de s'assurer que dependabot a bien fait son travail et que les versions notées ne sont pas fluides.

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Essentiellement, le test consiste à vérifier que le serveur fonctionne toujours. Pour ce faire, lancez make test-functional, si tout est OK, c'est qu'il n'y a pas de régression.