chore: exclude requirements.txt file from renovate-bot (#1594) (#811)
chore: exclude requirements.txt file from renovate-bot (#1594) (#811)

Source-Link: https://github.com/googleapis/synthtool/commit/f58d3135a2fab20e225d98741dbc06d57459b816
Post-Processor: 48d5800083e04fbe06b7d85b0e411aebd73b5710@sha256:f14e3fefe8e361e85752bd9890c8e56f2fe25f1e89cbb9597e4e3c7a429203a3
googleapis/java-shared-dependencies,googleapis/java-shared-dependencies,googleapis/java-shared-dependencies