Build Pull Requests via spring-security-actions

Also renames pr-build-workflow.yml to pull-request-build.yml and
auto-merge-dependabot-prs.yml to dependabot-pull-request-automerge.yml
to align naming with the commercial branches.

Author: jzheaux

…/workflows/auto-merge-dependabot-prs.yml …ws/dependabot-pull-request-automerge.yml.github/workflows/auto-merge-dependabot-prs.yml renamed to .github/workflows/dependabot-pull-request-automerge.yml .github/workflows/auto-merge-dependabot-prs.yml renamed to .github/workflows/dependabot-pull-request-automerge.yml

@@ -0,0 +1,17 @@
+name: Pull Request - Build
+
+on: pull_request
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    if: github.repository == 'spring-projects/spring-ldap'
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: spring-io/spring-security-actions/pr-build@4386090bf7852faa1d61782f981811441757dbb8  # main
+        with:
+          java-version: '17'