Update notes for submitted changes

* JGit v5.1.14.202011251942-r
* GC#deleteOrphans: log warning for deleted orphaned files
* GC#deleteOrphans: handle failure to list files in pack directory
* Ensure that GC#deleteOrphans respects pack lock

0f/1735de0be732e177fc7eb3b32e4d4b41f999cf

@@ -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: Wed, 25 Nov 2020 20:08:19 -0500
+Reviewed-on: https://git.eclipse.org/r/c/jgit/jgit/+/172861
+Project: jgit/jgit
+Branch: refs/heads/stable-5.1

39/96408cdefccadaf64ec3e0a4e84c8206ca4f90

@@ -0,0 +1,8 @@
+Code-Review+1: Luca Milanesio <luca.milanesio@gmail.com>
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Verified+1: JGit Bot <jgit-bot@eclipse.org>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Wed, 25 Nov 2020 20:08:19 -0500
+Reviewed-on: https://git.eclipse.org/r/c/jgit/jgit/+/172860
+Project: jgit/jgit
+Branch: refs/heads/stable-5.1

da/c540a37fc12be6afe9809fb03538942fe1461c

@@ -0,0 +1,7 @@
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Verified+1: JGit Bot <jgit-bot@eclipse.org>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Wed, 25 Nov 2020 20:08:19 -0500
+Reviewed-on: https://git.eclipse.org/r/c/jgit/jgit/+/172862
+Project: jgit/jgit
+Branch: refs/heads/stable-5.1

fd/e7a271a4f961484ae6e8357fd64277cfc03585

@@ -0,0 +1,9 @@
+Code-Review+1: Luca Milanesio <luca.milanesio@gmail.com>
+Code-Review+1: Fabio Ponciroli <ponch78@gmail.com>
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Verified+1: JGit Bot <jgit-bot@eclipse.org>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Wed, 25 Nov 2020 20:08:19 -0500
+Reviewed-on: https://git.eclipse.org/r/c/jgit/jgit/+/172829
+Project: jgit/jgit
+Branch: refs/heads/stable-5.1