I include secret during Cloud build time but it's choking with error, I believe there Is some hard limit of 100 variables on GCP Secret manager.
ERROR: (gcloud.builds.submit) INVALID_ARGUMENT: invalid build: invalid secrets: build defines more than 100 secret values
That is correct.
The limit is 100 args. https://cloud.google.com/build/docs/build-config-file-schema
Basically each arg counts as step, same with secret values.