Merge branch 'master' into stable-7.1

* master:
  errorprone: Disable javadoc checks in tests
  Rename numberOfPackFilesAfterBitmap to numberOfPackFilesSinceBitmap
  Replace custom encoder Constants#encodeASCII by JDK implementation
  Replace custom encoder `Constants#encode` by JDK implementation
  DfsGarbageCollector: #setReflogExpire with Instant instead of Date
  ssh: Minor simplification in SerialRangeSet
  DfsBlockCacheConfig: propagate hotmap configs to pack ext cache configs
  SystemReader: Offer methods with java.time API
  Add `numberOfPackFilesAfterBitmap` to RepoStatistics
  Enhance CommitBuilder#parent to tolerate null parent
  GPG: use BC PGP secret key parsing out of the box
  [errorprone] bc: Remove unused SExprParser#parseSecretKey
  Update bouncycastle to 1.79
  Update bytebuddy to 1.15.10
  DfsPackCompactor: write object size index
  [errorprone] BaseRepositoryBuilder: Use #split(sep, limit)
  [errorprone] Remove deprecated security manager
  [errorprone] RefDatabase: #getConflictingNames immutable return
  DfsGarbageCollector: Add setter for reflog expiration time.
  [errorprone] SeparateClassloadertTestRunner: use #split(String,int)
  [errorprone] HttpConnection: Add missing summary in java
  [errorprone] PackWriter: Fix javadoc tag in new #writeIndex method
  [errorprone] ByteArraySet: Add summary fragment to javadoc
  [errorprone] util.Stats: Add summary fragment to javadoc
  DfsInserter: Read minBytesForObjectSizeIndex only from repo config
  PackWriter: make PackWriter.writeIndex() take a PackIndexWriter
  dfs: update getBlockCacheStats to return a List of BlockCacheStats
  Update mockito to 5.14.2
  Update bytebuddy to 1.15.7
  Remove unnecessary argument handler in MergeBase.java
  Replace custom encoder Constants#encodeASCII by JDK implementation

Change-Id: I0f84a69af152936f66bbcd2c8d9190ad159e7878