2.66.0 (2026-01-23)

Features

• Upgrade protobuf runtime and gen code to 4.33.x (#4000) (#4074) (3e37376)

Dependencies

• Downgrade opentelemetry to 1.51.0 (#4075) (cf65482)
• update auth library to 1.42.0 (#4087) (ad9ee07)
• update googleapis/java-cloud-bom digest to ef3656d (#3630) (790bcf0)
• update http-client to 2.1.0 (#4086) (d8bc8f5)