Update release repository pin

Signed-off-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Change-Id: I21cd7e86fceaa144a63a311d540b93b4c5fd561a
diff --git a/release_repository b/release_repository
index 4ba87db..975dfe1 160000
--- a/release_repository
+++ b/release_repository
@@ -1 +1 @@
-Subproject commit 4ba87dbdc3b22220eba4a792c1f5c87e7a88c7af
+Subproject commit 975dfe175e3d7c62c27598b1c0e8e77ed90df463