chore(deps): update dependency google-api-core to v2.28.0

Author: renovate-bot

requirements.txt

@@ -149,9 +149,9 @@ deprecated==1.2.18 \
     # via
     #   opentelemetry-api
     #   opentelemetry-semantic-conventions
-google-api-core[grpc]==2.26.0 \
-    --hash=sha256:2b204bd0da2c81f918e3582c48458e24c11771f987f6258e6e227212af78f3ed \
-    --hash=sha256:e6e6d78bd6cf757f4aee41dcc85b07f485fbb069d5daa3afb126defba1e91a62
+google-api-core[grpc]==2.28.0 \
+    --hash=sha256:4743b7d45fe8c0930e59928b1bade287242910f30b06ff9b22f139a3e33271b8 \
+    --hash=sha256:b4362b0e2e6bc06037cfb0e2b28e2fe0c3f9d760dc311f314d5fb373768c7387
     # via
     #   google-cloud-core
     #   google-cloud-spanner