Restore GitHub workflows

.github/workflows/build-pull-request.yml

@@ -0,0 +1,24 @@
+name: Build Pull Request
+on: pull_request
+permissions:
+  contents: read
+jobs:
+  build:
+    name: Build Pull Request
+    if: ${{ github.repository == 'spring-projects/spring-boot' }}
+    runs-on: ${{ vars.UBUNTU_MEDIUM || 'ubuntu-latest' }}
+    steps:
+      - name: Check Out Code
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Build
+        id: build
+        uses: ./.github/actions/build
+      - name: Print JVM Thread Dumps When Cancelled
+        if: cancelled()
+        uses: ./.github/actions/print-jvm-thread-dumps
+      - name: Upload Build Reports
+        if: failure()
+        uses: actions/upload-artifact@v7
+        with:
+          name: build-reports
+          path: '**/build/reports/'