Update fiber package version to 3.1.0

Bump fiber package version to 2.52.12

Merge pull request #4045 from gofiber/improve-documentation-in-whats_…

…new.md

Bump version to 2.52.11

Update fiber package version to 3.0.0-rc.3

Update version to 2.52.10

prepare release v2.52.10

prepare release for v3.0.0-rc.2

prepare release v3.0.0-rc.1

🐛 bug: Fix MIME type equality checks (#3602)

Update app.go

prepare release v2.52.9