Check for changes to data_model directory without a sha update - Issue #31571 (#33110)

* Create check-data-model-directory-updates.yaml

* Added the workflow code

* Removed dependabot branch ignore

* Update .github/workflows/check-data-model-directory-updates.yaml

Co-authored-by: C Freeman <cecille@google.com>

---------

Co-authored-by: Andrei Litvin <andy314@gmail.com>
Co-authored-by: C Freeman <cecille@google.com>

Author: 3 people

.github/workflows/check-data-model-directory-updates.yaml

@@ -0,0 +1,31 @@
+# Copyright (c) 2024 Project CHIP Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Check for changes to data_model directory without a sha update 
+
+on:
+  pull_request:
+    paths:
+      - "data_model/**"
+
+jobs:
+  check-submodule-update-label:
+    name: Check for changes to data_model directory without a sha update
+    runs-on: ubuntu-latest
+    if: "git diff --name-only HEAD^..HEAD data_model/ | grep -q spec_sha"
+    steps:
+      - name: Error Message
+        run: echo This pull request attempts to update data_model directory, but is missing updates to spec_sha file with the latest version of the sha. Files in the data_model directory are generated automatically and should not be updated manually.
+      - name: Fail Job
+        run: exit 1