Bump com.enonic.lib:lib-util from 2.2.1 to 3.1.1

Bumps [com.enonic.lib:lib-util](https://github.com/enonic/lib-util) from 2.2.1 to 3.1.1.
- [Release notes](https://github.com/enonic/lib-util/releases)
- [Commits](enonic/lib-util@v2.2.1...v3.1.1)

---
updated-dependencies:
- dependency-name: com.enonic.lib:lib-util
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

build.gradle

@@ -20,7 +20,7 @@ dependencies {
     include "com.enonic.xp:lib-content:${xpVersion}"
     include "com.enonic.xp:lib-portal:${xpVersion}"
     include "com.enonic.xp:lib-common:${xpVersion}"
-    include "com.enonic.lib:lib-util:2.2.1"
+    include "com.enonic.lib:lib-util:3.1.1"
     include "com.enonic.xp:lib-task:${xpVersion}"
     include "com.enonic.xp:lib-auth:${xpVersion}"
     include "com.enonic.xp:lib-admin:${xpVersion}"