Automatically close weekly ci issue if weekly ci succeeds

.github/workflows/weekly.yml

@@ -82,6 +82,24 @@ jobs:
         # See tools/ci/src/main.rs for the commands this runs
         run: cargo run -p ci -- compile
 
+  close-any-open-issues:
+    runs-on: ubuntu-latest
+    needs: ['test', 'lint', 'check-compiles']
+    permissions:
+      issues: write
+    steps:
+      - name: Close issues
+        run: |
+          previous_issue_number=$(gh issue list \
+            --search "$TITLE in:title" \
+            --json number \
+            --jq '.[0].number')
+          if [[ -n $previous_issue_number ]]; then
+            gh issue close $previous_issue_number \
+              -r completed \
+              -c "[Last pipeline run](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}) successfully completed. Closing issue."
+          fi
+
   open-issue:
     name: Warn that weekly CI fails
     runs-on: ubuntu-latest