Bump bcprov-jdk15on from 1.66 to 1.67 in /samples/springboot

Bumps [bcprov-jdk15on](https://github.com/bcgit/bc-java) from 1.66 to 1.67.
- [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:bcprov-jdk15on
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

samples/springboot/pom.xml

@@ -72,7 +72,7 @@
             <dependency>
                 <groupId>org.bouncycastle</groupId>
                 <artifactId>bcprov-jdk15on</artifactId>
-                <version>1.66</version>
+                <version>1.67</version>
             </dependency>
             <dependency>
                 <groupId>org.junit.jupiter</groupId>