Fix auto-update action (#7804)

so it doesn't keep trying to open new PRs while existing PR is open

.github/workflows/auto-update-otel-sdk.yml

@@ -12,6 +12,7 @@ jobs:
     outputs:
       current-version: ${{ steps.check-versions.outputs.current-version }}
       latest-version: ${{ steps.check-versions.outputs.latest-version }}
+      already-opened: ${{ steps.check-versions.outputs.already-opened }}
     steps:
       - uses: actions/checkout@v3
 
@@ -28,12 +29,24 @@ jobs:
                                --jq .tagName \
                              | sed 's/^v//')
 
+          matches=$(gh pr list \
+                        --author opentelemetrybot \
+                        --state open \
+                        --search "in:title \"Update the OpenTelemetry SDK version to $latest_version\"")
+          if [ ! -z "$matches" ]
+          then
+            already_opened=true
+          fi
+
           echo "current-version=$current_version" >> $GITHUB_OUTPUT
           echo "latest-version=$latest_version" >> $GITHUB_OUTPUT
+          echo "already-opened=$already_opened" >> $GITHUB_OUTPUT
 
   update-otel-sdk:
     runs-on: ubuntu-latest
-    if: needs.check-versions.outputs.current-version != needs.check-versions.outputs.latest-version
+    if: |
+      needs.check-versions.outputs.current-version != needs.check-versions.outputs.latest-version &&
+      needs.check-versions.outputs.already-opened != 'true'
     needs:
       - check-versions
     steps:
@@ -56,7 +69,7 @@ jobs:
         env:
           VERSION: ${{ needs.check-versions.outputs.latest-version }}
           # not using secrets.GITHUB_TOKEN since pull requests from that token do not run workflows
-          GH_TOKEN: ${{ secrets.BOT_TOKEN }}
+          GH_TOKEN: ${{ secrets.OPENTELEMETRYBOT_GITHUB_TOKEN }}
         run: |
           message="Update the OpenTelemetry SDK version to $VERSION"
           body="Update the OpenTelemetry SDK version to \`$VERSION\`."