Update jgit to 24d6d605388c82201092cf1699b51095299380a2

This update provides:

- 24d6d6053 Retry loose object read upon "Stale file handle" exception
- 12f39c26b Ignore missing javadoc in test bundles
- e7b4af0d9 Prepare 5.1.17-SNAPSHOT builds
- 8bc166b00 BatchRefUpdate: Skip saving conflicting ref names and
            prefixes in memory
- 294a99af2 BatchRefUpdateTest: Accurately assert RefsChangedEvent(s)
            fired
- 303dd019d Optimize RefDirectory.isNameConflicting()
- 6f083e7cf Update bazlets and bazel version

Change-Id: Ia1a853b57d2844fed1576c2035360d63ed2f2b2d

modules/jgit

diff --git a/modules/jgit b/modules/jgit
index 73f8acd..24d6d60 160000
--- a/modules/jgit
+++ b/modules/jgit
@@ -1 +1 @@
-Subproject commit 73f8acdc5c97e068143c86765995c4fb6923ee91
+Subproject commit 24d6d605388c82201092cf1699b51095299380a2