Bump bcpVersion from 1.77 to 1.78 (#356)

Bumps `bcpVersion` from 1.77 to 1.78.

Updates `org.bouncycastle:bcpkix-jdk18on` from 1.77 to 1.78
- [Changelog](https://github.com/bcgit/bc-java/blob/main/docs/releasenotes.html)
- [Commits](https://github.com/bcgit/bc-java/commits)

Updates `org.bouncycastle:bcprov-jdk18on` from 1.77 to 1.78
- [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:bcpkix-jdk18on
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.bouncycastle:bcprov-jdk18on
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -29,7 +29,7 @@ subprojects {
     sourceCompatibility=1.8
 
     ext {
-        bcpVersion = '1.77'
+        bcpVersion = '1.78'
         guiceVersion = '4.2.3'
         jacksonVersion = '2.17.0'
         jerseyVersion = '2.42'