Update policy to work on tags

Co-authored-by: Christoph Hamsen <[email protected]>

Author: sarahchen6

.github/chainguard/dd-trace-java.release.sts.yaml

@@ -1,12 +1,11 @@
 issuer: https://gitlab.ddbuild.io
 
-# DEBUG: ref should be "master"
-subject: "project_path:DataDog/apm-reliability/dd-trace-java:ref_type:branch:ref:sarahchen6/use-octo-sts"
+subject_pattern: "project_path:DataDog/apm-reliability/dd-trace-java:ref_type:tag:ref:v.*"
 
 claim_pattern:
   project_path: "DataDog/apm-reliability/dd-trace-java"
-  ref_type: "branch"
-  # ref: "master"
+  ref_type: "tag"
+  ref: "v.*"
 
 permissions:
   contents: "write"