Bump me.champeau.gradle.japicmp from 0.4.4 to 0.4.5 (#457)

Bumps me.champeau.gradle.japicmp from 0.4.4 to 0.4.5.

---
updated-dependencies:
- dependency-name: me.champeau.gradle.japicmp
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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agent/build.gradle

@@ -4,7 +4,7 @@ plugins {
     id "maven-publish"
     id "signing"
     id "org.unbroken-dome.test-sets" version "4.0.0"
-    id 'me.champeau.gradle.japicmp' version '0.4.4' apply false
+    id 'me.champeau.gradle.japicmp' version '0.4.5' apply false
     id 'de.undercouch.download' version '5.6.0' apply false    
 }