Bump org.altbeacon:android-beacon-library from 2.20.7 to 2.21.0

Bumps [org.altbeacon:android-beacon-library](https://github.com/AltBeacon/android-beacon-library) from 2.20.7 to 2.21.0.
- [Release notes](https://github.com/AltBeacon/android-beacon-library/releases)
- [Changelog](https://github.com/AltBeacon/android-beacon-library/blob/master/CHANGELOG.md)
- [Commits](https://github.com/AltBeacon/android-beacon-library/commits)

---
updated-dependencies:
- dependency-name: org.altbeacon:android-beacon-library
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 activity-compose = "1.10.0"
-androidBeaconLibrary = "2.20.7"
+androidBeaconLibrary = "2.21.0"
 androidPlugin = "8.8.0"
 androidSdk-compile = "35"
 androidSdk-min = "21"