build(deps): bump org.bouncycastle:bcprov-jdk18on

Bumps [org.bouncycastle:bcprov-jdk18on](https://github.com/bcgit/bc-java) 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:bcprov-jdk18on
  dependency-type: direct:production
...

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

java/app-encryption/pom.xml

@@ -46,7 +46,7 @@
     <amazonaws.version>1.21.1</amazonaws.version>
     <aws.sdk.version>1.12.468</aws.sdk.version>
     <aws.sdk-v2.version>2.21.46</aws.sdk-v2.version>
-    <bouncycastle.version>1.77</bouncycastle.version>
+    <bouncycastle.version>1.78</bouncycastle.version>
     <build.helper.version>3.3.0</build.helper.version>
     <caffeine.version>3.1.8</caffeine.version>
     <checkerframework.version>3.41.0</checkerframework.version>