Fix kubeconform pre-commit to not leave around containers (#38688)

(cherry picked from commit d212b11)

scripts/ci/pre_commit/kubeconform.py

@@ -41,7 +41,7 @@
     stdout=subprocess.PIPE,
 )
 result = subprocess.run(
-    ["docker", "run", "-i", "ghcr.io/yannh/kubeconform:latest-alpine", "--strict"],
+    ["docker", "run", "--rm", "-i", "ghcr.io/yannh/kubeconform:latest-alpine", "--strict"],
     stdin=ps.stdout,
     check=False,
 )