try switching to gh cli for pr creation

Author: elizabethhealy

.github/workflows/update-platform-branch.yaml

@@ -112,17 +112,21 @@ jobs:
 
       - name: Create New PR
         if: steps.check-pr.outputs.EXISTING_PR == ''
-        uses: peter-evans/[email protected]
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          commit-message: "fix(sdk): Updates to proto version $LATEST_TAG"
-          branch: update-platform-branch
-          title: "fix(sdk): Updates to proto version $LATEST_TAG"
-          body: |
-            This PR updates the platform.branch property in all pom.xml files to the new tag or branch: $LATEST_TAG.
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          cat <<EOF > pr_body.txt
+          This PR updates the platform.branch property in all pom.xml files to the new tag or branch: $LATEST_TAG.
+
+          See the release: https://github.com/opentdf/platform/releases/tag/$LATEST_TAG
 
-            See the release: https://github.com/opentdf/platform/releases/tag/$LATEST_TAG
+          Release Notes:
+          $RELEASE_NOTES
+          EOF
+          gh pr create \
+            --title "fix(sdk): Updates to proto version $LATEST_TAG" \
+            --body-file pr_body.txt \
+            --head update-platform-branch \
+            --base main \
+            --label "automated-update"
 
-            Release Notes:
-            $RELEASE_NOTES
-          labels: "automated-update"