Merge branch 'master' into stable-6.7

* master:
  Remove the cbi-snapshots Maven repository
  Update Orbit to orbit-aggregation/release/4.29.0
  Add target platform for Eclipse 2023-09 (4.29)
  Use release p2 repo for Eclipse 2023-06 (4.28)
  Update tycho to 4.0.2
  Update jmh to 1.37
  Update bouncycastle to 1.76
  Fix some tests in ConfigTest
  Handle global git config $XDG_CONFIG_HOME/git/config
  IO: use JDK convenience methods
  org.eclipse.jgit.junit.ssh/.settings/.api_filters: fix unclosed tags
  ReadChangedPathFilter: fix Non-externalized string literal warning
  Introduce core.packedIndexGitUseStrongRefs config key
  DfsReader: Make PackLoadListener interface visible to subclasses
  DfsGarbageCollector: provide commit graph stats
  DfsGarbageCollector: put only GC commits into the commit graph
  DfsReader: Expose when indices are loaded

Change-Id: Idd78a0a1bc3cd3db5edb475e235c13354d9087a9