Fixed:
- Core: Optimise vendor images #3143
- Core: Show the correct error when adding invalid custom slugs #3145
- Core: Stop hard caching redirects #3094
- Core: Update vendors #3136 #3111 #3119
- DX: Fix docker build #3121
- DX: Fix typo in pull request templates #3140
- MediaGalleries: Fix text being truncated #3139
- MediaLibrary: Fix uploading big files #3146