Force Snapshot Build is separate workflow

Previously builds against the forced snapshots would prevent releases.
This didn't work out in practice because breaking changes could be
introduced that were not intended to be picked up until after releases.

This change splits the snapshot builds into a separate workflow so that
we are still informed when there is a breaking change coming, but it
does not block the release.

Closes gh-17558

Author: rwinch

.github/workflows/check-snapshots.yml

@@ -0,0 +1,38 @@
+name: CI
+
+on:
+  schedule:
+    - cron: '0 10 * * *' # Once per day at 10am UTC
+  workflow_dispatch: # Manual trigger
+
+env:
+  DEVELOCITY_ACCESS_KEY: ${{ secrets.DEVELOCITY_ACCESS_KEY }}
+
+permissions:
+  contents: read
+
+jobs:
+  snapshot-test:
+    name: Test Against Snapshots
+    uses: spring-io/spring-security-release-tools/.github/workflows/test.yml@v1
+    strategy:
+      matrix:
+        include:
+          - java-version: 21-ea
+            toolchain: 21
+          - java-version: 17
+            toolchain: 17
+    with:
+      java-version: ${{ matrix.java-version }}
+      test-args: --refresh-dependencies -PforceMavenRepositories=snapshot,https://oss.sonatype.org/content/repositories/snapshots -PisOverrideVersionCatalog -PtestToolchain=${{ matrix.toolchain }} -PspringFrameworkVersion=7.+ -PreactorVersion=2025.+ -PspringDataVersion=2025.+ --stacktrace
+    secrets: inherit
+  send-notification:
+    name: Send Notification
+    needs: [ snapshot-test ]
+    if: ${{ !success() }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Send Notification
+        uses: spring-io/spring-security-release-tools/.github/actions/send-notification@v1
+        with:
+          webhook-url: ${{ secrets.SPRING_SECURITY_CI_GCHAT_WEBHOOK_URL }}

.github/workflows/continuous-integration-workflow.yml

@@ -27,38 +27,24 @@ jobs:
       java-version: ${{ matrix.jdk }}
       distribution: temurin
     secrets: inherit
-  test:
-    name: Test Against Snapshots
-    uses: spring-io/spring-security-release-tools/.github/workflows/test.yml@v1
-    strategy:
-      matrix:
-        include:
-          - java-version: 21-ea
-            toolchain: 21
-          - java-version: 17
-            toolchain: 17
-    with:
-      java-version: ${{ matrix.java-version }}
-      test-args: --refresh-dependencies -PforceMavenRepositories=snapshot,https://oss.sonatype.org/content/repositories/snapshots -PisOverrideVersionCatalog -PtestToolchain=${{ matrix.toolchain }} -PspringFrameworkVersion=7.+ -PreactorVersion=2025.+ -PspringDataVersion=2025.+ --stacktrace
-    secrets: inherit
   deploy-artifacts:
     name: Deploy Artifacts
-    needs: [ build, test]
+    needs: [ build]
     uses: spring-io/spring-security-release-tools/.github/workflows/deploy-artifacts.yml@v1
     with:
       should-deploy-artifacts: ${{ needs.build.outputs.should-deploy-artifacts }}
       default-publish-milestones-central: true
     secrets: inherit
   deploy-docs:
     name: Deploy Docs
-    needs: [ build, test ]
+    needs: [ build ]
     uses: spring-io/spring-security-release-tools/.github/workflows/deploy-docs.yml@v1
     with:
       should-deploy-docs: ${{ needs.build.outputs.should-deploy-artifacts }}
     secrets: inherit
   deploy-schema:
     name: Deploy Schema
-    needs: [ build, test ]
+    needs: [ build ]
     uses: spring-io/spring-security-release-tools/.github/workflows/deploy-schema.yml@v1
     with:
       should-deploy-schema: ${{ needs.build.outputs.should-deploy-artifacts }}