Add saschagrunert and alejandrox1 to sig-release-approvers

To fulfill the role as new technical lead we need to be part of the SIG
release approvers role.

Signed-off-by: Sascha Grunert <[email protected]>

Author: saschagrunert

OWNERS_ALIASES

@@ -113,15 +113,16 @@ aliases:
 
   # SIG Release
   sig-release-approvers:
-    - calebamiles # SIG Chair
+    - alejandrox1 # SIG Technical Lead
     - justaugustus # SIG Chair
+    - saschagrunert # SIG Technical Lead
     - tpepper # SIG Chair
   release-engineering-approvers:
-    - calebamiles # SIG Chair
+    - alejandrox1 # SIG Technical Lead
     - justaugustus # SIG Chair
-    - tpepper # SIG Chair / Patch Release Team
+    - saschagrunert # SIG Technical Lead
+    - tpepper # SIG Chair
   release-engineering-reviewers:
-    - calebamiles # SIG Chair
     - cpanato # Branch Manager
     - feiskyer # Patch Release Team
     - hasheddan # Branch Manager