⬆️ Bump org.signal:libsignal-client from 0.39.3 to 0.40.0

Bumps [org.signal:libsignal-client](https://github.com/signalapp/libsignal) from 0.39.3 to 0.40.0.
- [Release notes](https://github.com/signalapp/libsignal/releases)
- [Changelog](https://github.com/signalapp/libsignal/blob/main/RELEASE.md)
- [Commits](signalapp/libsignal@v0.39.3...v0.40.0)

---
updated-dependencies:
- dependency-name: org.signal:libsignal-client
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

gradle/libs.versions.toml

@@ -14,7 +14,7 @@ kotlinx-serialization = "1.6.2"
 ktor = "2.3.8"
 logback = "1.4.14"
 realm = "1.13.0"
-signal = "0.39.3"
+signal = "0.40.0"
 tabler-icons = "1.1.0"
 theme-detector = "3.8"
 zxing = "3.5.3"