v1.37.0/v0.61.0

What's Changed

• Drop support for go 1.25 by @dashpole in #1190
• Deprecate trace and metric exporters and add migration guide by @dashpole in #1192
• Deprecate extension/googleclientauthextension module by @dashpole in #1187
• fix: update Cloud Functions gen2 e2e test runtime to go126 by @dashpole in #1195
• propagator: deprecate package and add missing module-level deprecations by @dashpole in #1196
• detectors/gcp: deprecate GCP resource detection package by @dashpole in #1193
• Prepare release v1.37.0/v0.61.0 by @dashpole in #1198

Full Changelog: v0.60.0...v0.61.0