ci: update and rename check-merge-conflicts.yml

.github/workflows/check-git-branches.yml

@@ -1,34 +0,0 @@
-name: check-merge-conflicts
-
-# Check that the latest release branch merges into master and develop
-
-on:
-  workflow_dispatch:
-
-jobs:
-  get_release:
-    runs-on: ubuntu-20.04
-    outputs:
-      output1: ${{ steps.step2.outputs.latest_release }}
-    steps:
-      - name: Check out repository code
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-      - name: Set output variable to latest release branch
-        id: step2
-        run: echo "latest_release=$(git branch -r | grep -E 'release/v[0-9]+\.[0-9]+\.[0-9]+' | tail -n 1 | sed 's/  origin\///')" >> $GITHUB_OUTPUT
-  check-merge-master:
-    name: Check that the release branch merges into master
-    needs: get_release
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repo
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-      - name: Check merge master
-        run: |
-          ./.github/workflows/support-files/git-merge-check.sh master $branch1
-        env:
-          branch1: ${{needs.get_release.outputs.output1}}

.github/workflows/check-merge-conflicts.yml

@@ -0,0 +1,59 @@
+name: check-merge-conflicts
+
+# Check that the latest release branch merges into master and develop without
+# any conflicts that git is not able to resolve
+
+on:
+  workflow_dispatch:
+
+jobs:
+  get-release:
+    runs-on: ubuntu-20.04
+    outputs:
+      output1: ${{ steps.step2.outputs.latest_release }}
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Set output variable to latest release branch
+        id: step2
+        run: echo "latest_release=$(git branch -r | grep -E 'release/v[0-9]+\.[0-9]+\.[0-9]+$' | sort -V | tail -n 1)" >> $GITHUB_OUTPUT
+
+  check-merge-release-into-master:
+    name: Check that the release branch merges into master
+    needs: get_release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Setup git user
+        run: |
+          git config --global user.name "ci"
+          git config --global user.email "ci@localhost"
+      - name: Check merge release branch into master
+        run: |
+          ./.github/workflows/support-files/git-merge-check.sh origin/master $branch1
+        env:
+          branch1: ${{needs.get_release.outputs.output1}}
+
+  check-merge-release-into-develop:
+    name: Check that the release branch merges into develop
+    needs: get_release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Setup git user
+        run: |
+          git config --global user.name "ci"
+          git config --global user.email "ci@localhost"
+      - name: Check merge release branch into develop
+        run: |
+          ./.github/workflows/support-files/git-merge-check.sh origin/develop $branch1
+        env:
+          branch1: ${{needs.get_release.outputs.output1}}