Update git submodules

* Update docs/submodules/policy/parent.git from branch 'master'
  to a7eabbacb52951f5a9cbd3a4eec2643e86feb2dd
  - Merge "Automation adds release-notes.rst"
  - Automation adds release-notes.rst

    Add _release_notes hook to allow automation.
    Fix non valid release notes characters in content.

    Issue-ID: CIMAN-376
    Change-Id: I74656c29321aa7120c40c4fe437f5a45040df978
    Signed-off-by: lf-jobbuilder <releng+lf-jobbuilder@linuxfoundation.org>

diff --git a/docs/submodules/policy/parent.git b/docs/submodules/policy/parent.git
index 87b4037..a7eabba 160000 (submodule)
--- a/docs/submodules/policy/parent.git
+++ b/docs/submodules/policy/parent.git
@@ -1 +1 @@
-Subproject commit 87b40377097221ce2b3699df8032bc03df630904
+Subproject commit a7eabbacb52951f5a9cbd3a4eec2643e86feb2dd