build(deps): Bump richtext from 0.17.0 to 0.20.0

Bumps `richtext` from 0.17.0 to 0.20.0.

Updates `com.halilibo.compose-richtext:richtext-commonmark` from 0.17.0 to 0.20.0
- [Release notes](https://github.com/halilozercan/compose-richtext/releases)
- [Changelog](https://github.com/halilozercan/compose-richtext/blob/main/CHANGELOG.md)
- [Commits](https://github.com/halilozercan/compose-richtext/compare/v0.17.0...v0.20.0)

Updates `com.halilibo.compose-richtext:richtext-ui-material3` from 0.17.0 to 0.20.0
- [Release notes](https://github.com/halilozercan/compose-richtext/releases)
- [Changelog](https://github.com/halilozercan/compose-richtext/blob/main/CHANGELOG.md)
- [Commits](https://github.com/halilozercan/compose-richtext/compare/v0.17.0...v0.20.0)

---
updated-dependencies:
- dependency-name: com.halilibo.compose-richtext:richtext-commonmark
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.halilibo.compose-richtext:richtext-ui-material3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

gradle/libs.versions.toml

@@ -108,7 +108,7 @@ playReviewKtx = "2.0.1"
 # https://developers.google.com/android/guides/setup
 playServicesBase = "18.2.0"
 # https://github.com/halilozercan/compose-richtext/releases
-richtext = "0.17.0"
+richtext = "0.20.0"
 # https://mvnrepository.com/artifact/com.microsoft.signalr/signalr
 signalr = "8.0.0"
 # https://mvnrepository.com/artifact/org.slf4j/slf4j-api