Add concurrency groups to all PR-triggered workflows

Add cancel-in-progress concurrency blocks to all 7 GitHub Actions
workflows triggered by pull_request. This ensures that when a new
commit is pushed to a PR, any already-queued or in-progress runs for
that PR are cancelled, avoiding wasted resources and reducing queue
delays for new commits.

Author: janhoy

.github/workflows/bin-solr-test.yml

@@ -11,6 +11,10 @@ on:
       - 'solr/core/src/java/org/apache/solr/cli/**'
       - 'solr/prometheus-exporter/**'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     name: Run Solr Script Tests

.github/workflows/docker-test.yml

@@ -10,6 +10,10 @@ on:
       - 'solr/docker/**'
       - 'solr/packaging/**'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     name: Build and test Docker image

.github/workflows/gradle-extraction-check.yml

@@ -8,6 +8,10 @@ on:
     paths:
       - 'solr/modules/extraction/**'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     name: extraction module tests with docker

.github/workflows/gradle-precommit.yml

@@ -5,6 +5,10 @@ on:
     branches:
       - '*'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     name: gradle check

.github/workflows/solrj-test.yml

@@ -8,6 +8,10 @@ on:
       - '.github/workflows/solrj-test.yml'
       - 'solr/solrj/**'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     name: Run SolrJ Tests

.github/workflows/tests-via-crave.yml

@@ -5,6 +5,10 @@ on:
     branches:
       - '*'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     name: Run Solr Tests using Crave.io resources

.github/workflows/validate-changelog.yml

@@ -5,6 +5,10 @@ on:
     branches:
       - '*'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   validate-changelog:
     name: Check changelog entry