Merge pull request #1738 from nextcloud/renovate/org.bouncycastle-bcpkix-jdk18on-1.x

fix(deps): update dependency org.bouncycastle:bcpkix-jdk18on to v1.81

Author: github-actions[bot]

library/build.gradle

@@ -71,7 +71,7 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
     implementation 'com.google.guava:guava:33.4.0-jre'
 
-    implementation 'org.bouncycastle:bcpkix-jdk18on:1.80'
+    implementation 'org.bouncycastle:bcpkix-jdk18on:1.81'
 
     spotbugsPlugins 'com.h3xstream.findsecbugs:findsecbugs-plugin:1.14.0'
     spotbugsPlugins 'com.mebigfatguy.sb-contrib:sb-contrib:7.6.10'