Fix docker version issue (#1189)

This PR should fix the docker client version issue that occur when cloud
build instances try to pull docker images.

Author: AmPaschal

common/cloud_builder.py

@@ -348,6 +348,8 @@ def _request_cloud_build(self, ofg_repo_url: str, agent_dill_url: str,
                     'GOOGLE_CLOUD_LOCATION=' +
                     os.getenv("GOOGLE_CLOUD_LOCATION", "global"),
                     '--network=cloudbuild',
+                    '-e',
+                    'DOCKER_API_VERSION=1.41',
                     # Built from this repo's `Dockerfile.cloudbuild-agent`.
                     ('us-central1-docker.pkg.dev/oss-fuzz/oss-fuzz-gen/'
                      'agent-image'),