Bump org.bouncycastle:bcprov-jdk18on

Bumps the gradle group with 1 update in the / directory: [org.bouncycastle:bcprov-jdk18on](https://github.com/bcgit/bc-java).


Updates `org.bouncycastle:bcprov-jdk18on` from 1.80 to 1.81
- [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-version: '1.81'
  dependency-type: direct:production
  dependency-group: gradle
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -20,7 +20,7 @@ apache-commons-compress = "1.26.2"
 maven-publish = "0.33.0"
 
 # other
-bouncycastle = "1.80"
+bouncycastle = "1.81"
 logback = "1.5.18"
 
 [libraries]