Bump external/Java.Interop from 73ebad2 to 53bfb4a (#7914)

Bumps [external/Java.Interop](https://github.com/xamarin/java.interop) from `73ebad2` to `53bfb4a`.
- [Release notes](https://github.com/xamarin/java.interop/releases)
- [Commits](dotnet/java-interop@73ebad2...53bfb4a)

---
updated-dependencies:
- dependency-name: external/Java.Interop
  dependency-type: direct:production
...

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Author: dependabot[bot]