Simplify property configuration: replace pluginGroup and pluginName with group and version in gradle.properties, and update diff filtering in workflow.

.github/template-cleanup/gradle.properties

@@ -1,7 +1,5 @@
-# IntelliJ Platform Artifacts Repositories -> https://plugins.jetbrains.com/docs/intellij/intellij-artifacts.html
-
-pluginGroup = %GROUP%
-pluginName = %NAME%
+group = %GROUP%
+version = 0.0.1
 
 pluginRepositoryUrl = https://github.com/%REPOSITORY%
 

.github/workflows/template-verify.yml

@@ -31,9 +31,8 @@ jobs:
           echo "\`\`\`diff" >> $GITHUB_STEP_SUMMARY
 
           diff -U 0 \
-            -I '^pluginVersion' \
-            -I '^pluginGroup' \
-            -I '^pluginName' \
+            -I '^version' \
+            -I '^group' \
             -I '^pluginRepositoryUrl' \
             --label .github/template-cleanup/gradle.properties \
             --label gradle.properties \

gradle.properties

@@ -1,5 +1,3 @@
-# IntelliJ Platform Artifacts Repositories -> https://plugins.jetbrains.com/docs/intellij/intellij-artifacts.html
-
 group = org.jetbrains.plugins.template
 version = 2.4.1