chore: bump to version 1.1.0

[ashwin153]

Greptile Summary

Bumped the cloud-sql-proxy devcontainer feature version from 1.0.0 to 1.1.0 to reflect the upgrade to cloud-sql-proxy v2 introduced in PR #9.

• Minor version bump follows semantic versioning for backwards-compatible functionality changes
• Aligns feature version with the underlying cloud-sql-proxy v2 upgrade

Confidence Score: 5/5

• This PR is safe to merge with no risk
• Single line version bump in a configuration file following semantic versioning conventions, with no code logic changes
• No files require special attention

Important Files Changed

Filename	Overview
src/cloud-sql-proxy/devcontainer-feature.json	Version bumped from 1.0.0 to 1.1.0 to reflect cloud-sql-proxy v2 upgrade

_{Last reviewed commit: 39320e5}