Fix policy

(cherry picked from commit 59d7926)

Author: sarahchen6

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

@@ -1,14 +1,12 @@
 issuer: https://gitlab.ddbuild.io
 
-subject: repo:DataDog/dd-trace-java:ref:refs/heads/* ?????
+subject: repo:DataDog/dd-trace-java:ref:refs/heads/master
 
 claim_pattern:
-  project_path: "DataDog/dd-trace-rb"
+  project_path: "DataDog/dd-trace-java"
   ref: "master"
   ref_type: "branch"
   ref_path: "refs/heads/master"
 
 permissions:
-  contents:
-    - read
-    - write
+  contents: "read,write"