Bump ivy from 2.5.0 to 2.5.1

Bumps ivy from 2.5.0 to 2.5.1.

---
updated-dependencies:
- dependency-name: org.apache.ivy:ivy
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

dependencies.gradle

@@ -17,7 +17,7 @@ ext {
     compileTestingVersion          = "0.19"
     groovyVersion       = "2.4.21"
     hamcrestCoreVersion = "2.2"
-    ivyVersion          = "2.5.0"
+    ivyVersion          = "2.5.1"
     jacocoVersion       = "0.8.2"
     jansiVersion        = "2.4.0"
     jline2Version       = "2.14.6"