chore: Bump gapic-generator-python version to 1.3.0 (#85)
chore: Bump gapic-generator-python version to 1.3.0 (#85)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 472561635

Source-Link: https://github.com/googleapis/googleapis/commit/332ecf599f8e747d8d1213b77ae7db26eff12814

Source-Link: https://github.com/googleapis/googleapis-gen/commit/4313d682880fd9d7247291164d4e9d3d5bd9f177
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNDMxM2Q2ODI4ODBmZDlkNzI0NzI5MTE2NGQ0ZTlkM2Q1YmQ5ZjE3NyJ9
googleapis/python-cloud-common,googleapis/python-cloud-common