Bump com.gradle.plugin-publish (#1309)

Bumps com.gradle.plugin-publish from 1.2.0 to 1.2.1.

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

plugins/gradle/graphql-java-codegen-gradle-plugin/build.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id "com.gradle.plugin-publish" version "1.2.0"
+    id "com.gradle.plugin-publish" version "1.2.1"
     id "java-gradle-plugin"
 }