Bump bcpkix-jdk15on from 1.69 to 1.70

Bumps [bcpkix-jdk15on](https://github.com/bcgit/bc-java) from 1.69 to 1.70.
- [Release notes](https://github.com/bcgit/bc-java/releases)
- [Changelog](https://github.com/bcgit/bc-java/blob/master/docs/releasenotes.html)
- [Commits](https://github.com/bcgit/bc-java/commits)

---
updated-dependencies:
- dependency-name: org.bouncycastle:bcpkix-jdk15on
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/modules/testutils/pom.xml b/modules/testutils/pom.xml
index 8203d86..9380a1c 100644
--- a/modules/testutils/pom.xml
+++ b/modules/testutils/pom.xml
@@ -62,7 +62,7 @@
         <dependency>
             <groupId>org.bouncycastle</groupId>
             <artifactId>bcpkix-jdk15on</artifactId>
-            <version>1.69</version>
+            <version>1.70</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>