Bump bouncycastleVersion from 1.73 to 1.77

Bumps `bouncycastleVersion` from 1.73 to 1.77.

Updates `org.bouncycastle:bcprov-jdk18on` from 1.73 to 1.77
- [Changelog](https://github.com/bcgit/bc-java/blob/main/docs/releasenotes.html)
- [Commits](https://github.com/bcgit/bc-java/commits)

Updates `org.bouncycastle:bcpkix-jdk18on` from 1.73 to 1.77
- [Changelog](https://github.com/bcgit/bc-java/blob/main/docs/releasenotes.html)
- [Commits](https://github.com/bcgit/bc-java/commits)

---
updated-dependencies:
- dependency-name: org.bouncycastle:bcprov-jdk18on
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.bouncycastle:bcpkix-jdk18on
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

gradle/libs.versions.toml

@@ -7,7 +7,7 @@ slf4jVersion = { strictly = "1.7.36" }
 # Main implementation dependencies
 avroVersion = "1.11.3"
 commonsCompressVersion = "1.24.0"
-bouncycastleVersion = "1.73"
+bouncycastleVersion = "1.77"
 javaxPersistenceApiVersion = "2.2"
 jacksonVersion = "2.15.2"
 osgiVersion = "8.0.0"