Hugo 0.56.2: A couple of Bug Fixes

This is a bug-fix release with a couple of important fixes.

• Add some more content language test assertions 84bc8d84 @bep #6136
• commands: Fix config reloading in Vim and similar 6eca0a3d @bep #6139
• Fix Jekyll import e28bd4c0 @bep #6131
• Fix image format detection for upper case extensions, e.g. JPG c62bbf7b @bep #6137
• Fix i18n project vs theme order 00a238e3 @bep #6134
• Add proper error message when receiving nil in Resource transformation e5f96024 @bep #6128
• Merge branch ‘release-0.56.1’ 9f497e7b @bep
• deps: Update go-org to v0.1.2 56908509 @niklasfasching