chore(python): use black==22.3.0 (#1176)

Source-Link: googleapis/synthtool@6fab84a
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:7cffbc10910c3ab1b852c05114a08d374c195a81cdec1d4a67a1d129331d0bfe

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Anthonios Partheniou <partheniou@google.com>

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,4 +13,4 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:5d8da01438ece4021d135433f2cf3227aa39ef0eaccc941d62aa35e6902832ae
+  digest: sha256:7cffbc10910c3ab1b852c05114a08d374c195a81cdec1d4a67a1d129331d0bfe