Update notes for submitted changes

* Prepare 5.1.17-SNAPSHOT builds

e7/b4af0d954b82839e8f8089af8d1d75ea2cf317

@@ -0,0 +1,7 @@
+Verified+1: JGit Bot <jgit-bot@eclipse.org>
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Sat, 05 Jun 2021 16:05:13 -0400
+Reviewed-on: https://git.eclipse.org/r/c/jgit/jgit/+/181472
+Project: jgit/jgit
+Branch: refs/heads/stable-5.1