fix: Add missing volumeMounts to dind sidecar in values file

charts/gha-runner-scale-set/values.yaml

@@ -329,6 +329,13 @@ template:
   ##         initialDelaySeconds: 0
   ##         failureThreshold: 24
   ##         periodSeconds: 5
+  ##       volumeMounts:
+  ##         - name: work
+  ##           mountPath: /home/runner/_work
+  ##         - name: dind-sock
+  ##           mountPath: /var/run
+  ##         - name: dind-externals
+  ##           mountPath: /home/runner/externals
   ##     containers:
   ##     - name: runner
   ##       image: ghcr.io/actions/actions-runner:latest