Bump fi.protonode:certy from 0.3.0 to 0.3.1

Bumps [fi.protonode:certy](https://github.com/tsaarni/java-certy) from 0.3.0 to 0.3.1.
- [Release notes](https://github.com/tsaarni/java-certy/releases)
- [Commits](tsaarni/java-certy@v0.3.0...v0.3.1)

---
updated-dependencies:
- dependency-name: fi.protonode:certy
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

lib/build.gradle

@@ -18,7 +18,7 @@ repositories {
 dependencies {
     testImplementation 'org.junit.jupiter:junit-jupiter:5.10.0'
     testImplementation 'org.apache.logging.log4j:log4j-slf4j-impl:2.20.0'
-    testImplementation 'fi.protonode:certy:0.3.0'
+    testImplementation 'fi.protonode:certy:0.3.1'
 
     // Following warning is printed with JDK17
     //   "OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended"