Update notes for submitted changes

* [spotbugs] Don't use class from java.util.concurrent for locking

13/e0ffbd3d87fba58e0739056810c51cb3e93b9b

@@ -0,0 +1,7 @@
+Verified+1: JGit Bot <jgit-bot@eclipse.org>
+Code-Review+2: Christian Halstrick <christian.halstrick@sap.com>
+Submitted-by: Christian Halstrick <christian.halstrick@sap.com>
+Submitted-at: Tue, 22 Dec 2020 19:39:32 -0500
+Reviewed-on: https://git.eclipse.org/r/c/jgit/jgit/+/173427
+Project: jgit/jgit
+Branch: refs/heads/master