1.28.2 Release

Despite the large diffs (caused by adopting swift-format), the actual changes are small:

• Change default of useAccessLevelOnImports to always be false by @gjcairo in #1711
• Silence a warning when using Xcode 16/Swift6 toolchain. by @thomasvl in #1717

What's Changed

• Make README clearer about serializedBytes() by @gjcairo in #1710
• Add CompileTests for InternalImportsByDefault by @gjcairo in #1709
• Change default of useAccessLevelOnImports to always be false by @gjcairo in #1711
• Set up for swift-format by @thomasvl in #1712
• Add a blame ignore for the formatting. by @thomasvl in #1713
• Update proto files from upstream by @thomasvl in #1714
• Silence a warning when using Xcode 16/Swift6 toolchain. by @thomasvl in #1717
• Add Swift 6 toolchains to CI. by @thomasvl in #1718
• Drop docc dep. by @thomasvl in #1720
• [docs] Fix typo for Xcode that is consistent with others at PLUGIN.md. by @lamtrinhdev in #1722
• Some swift-format lint fixes by @thomasvl in #1721
• Add two more formatting fixes to the blame ignore. by @thomasvl in #1723
• Allow block comments for the table in the code. by @thomasvl in #1724
• Resolve some more swift-format lint issues. by @thomasvl in #1725
• Update proto files from upstream. by @thomasvl in #1726
• Move the 6.0 workflows to 6.0.1. by @thomasvl in #1727
• Version bump for a release. by @thomasvl in #1728

Full Changelog: 1.28.1...1.28.2