Bump bouncycastle.version from 1.78.1 to 1.79

Bumps `bouncycastle.version` from 1.78.1 to 1.79.

Updates `org.bouncycastle:bcmail-jdk18on` from 1.78.1 to 1.79
- [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 1.78.1 to 1.79
- [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:bcmail-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>

pom.xml

@@ -54,7 +54,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.javadoc.failOnError>false</maven.javadoc.failOnError>
-        <bouncycastle.version>1.78.1</bouncycastle.version>
+        <bouncycastle.version>1.79</bouncycastle.version>
         <fontbox.version>2.0.28</fontbox.version>
         <sejda.commons.version>2.0.0</sejda.commons.version>
         <sejda.io.version>3.0.1</sejda.io.version>