Update dependency protobuf to v3.20.3

renovate[bot] · web-flow · commit 287cf4084b6e · 2023-10-20T03:40:30.000Z
diff --git a/requirements.txt b/requirements.txt
@@ -9,7 +9,7 @@ google-resumable-media==0.3.2
 googleapis-common-protos==1.6.0
 idna==2.8
 pprint==0.1
-protobuf==3.18.3
+protobuf==3.20.3
 pyasn1==0.4.5
 pyasn1-modules==0.2.5
 pytz==2019.1
