Release v0.21.0 · open-telemetry/opamp-go

What's Changed

Update opamp-spec to v0.13.0
Make it possible to set capabilities after client start by @jaronoff97 in #366
Add minimum token permissions for all github workflow files by @opentelemetrybot in #409
chore(deps): update github/codeql-action action to v3.29.2 by @renovate[bot] in #408
Sort contributor listings and remove affiliation from emeriti by @opentelemetrybot in #412
chore(deps): update github/codeql-action action to v3.29.3 by @renovate[bot] in #415
fix(deps): update module golang.org/x/tools to v0.35.0 by @renovate[bot] in #413
Fix tidy job and remove unused token by @trask in #419
Move Aneurysm9 to Emeritus Approvers by @tigrannajaryan in #416
Update go version to v1.23.0 by @michel-laterman in #423
chore(deps): update github/codeql-action action to v3.29.4 by @renovate[bot] in #420
fix: Add atomic.Bool to ensure wsConnection.Disconnect() is only called once by @shazlehu in #359
Fix incorrect usage of DefaultHttpClient causing data race by @tigrannajaryan in #425
chore(deps): update github/codeql-action action to v3.29.5 by @renovate[bot] in #424
chore(deps): update actions/checkout action to v4.3.0 by @renovate[bot] in #431
fix(deps): update module golang.org/x/tools to v0.36.0 by @renovate[bot] in #430
chore(deps): update github/codeql-action action to v3.29.8 by @renovate[bot] in #429
Demo: Feat/connection settings status by @michel-laterman in #390

Full Changelog: v0.20.0...v0.21.0