Bump com.gradle.plugin-publish in /tools/gradle-plugin (smallrye#1980)

Bumps com.gradle.plugin-publish from 1.2.2 to 1.3.0.

---
updated-dependencies:
- dependency-name: com.gradle.plugin-publish
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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tools/gradle-plugin/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java-gradle-plugin'
-    id("com.gradle.plugin-publish") version "1.2.2"
+    id("com.gradle.plugin-publish") version "1.3.0"
     id("com.github.vlsi.jandex") version "1.90"
 }