chore: new owl bot post processor docker image (#188)

gcr.io/repo-automation-bots/owlbot-python:latest@sha256:4c981a6b6f2b8914a448d7b3a01688365be03e3ed26dfee399a6aa77fb112eaa
diff --git a/.github/.OwlBot.lock.yaml b/.github/.OwlBot.lock.yaml
index 29084e8..864c176 100644
--- a/.github/.OwlBot.lock.yaml
+++ b/.github/.OwlBot.lock.yaml
@@ -1,4 +1,3 @@
 docker:
-  digest: sha256:cfc0e802701262c211703c468874d767f65dabe6a1a71d0e07bfc8a3d5175f32
-  image: gcr.io/repo-automation-bots/owlbot-python:latest  
-
+  image: gcr.io/repo-automation-bots/owlbot-python:latest
+  digest: sha256:4c981a6b6f2b8914a448d7b3a01688365be03e3ed26dfee399a6aa77fb112eaa