Eclipse JGit: Java implementation of Git 5.3.6

Bug Fixes

• Do not rely on ArrayIndexOutOfBoundsException to detect end of input. Config#StringReader relied on ArrayIndexOutOfBoundsException to detect the end of the input. Creation of exception with (deep) stack trace can significantly degrade performance e.g. when Gerrit reads all external ids from NoteDb.

• 1100344 WorkingTreeIterator: correctly handle different timestamp resolutions

• Fix WorkingTreeIterator.compareMetadata() for CheckStat.MINIMAL

Build and Release Engineering

• Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
• Bazel: Bump minimum supported version to 0.29.0
• Use bazelisk to switch between used bazel version