GitHub action updates (#31)

* switch to pinned github actions

* add dependabot for GitHub action version updates

Author: bashbaug

.github/dependabot.yml

@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    groups:
+      github-actions:
+        patterns:
+          - "*"

.github/workflows/cmake.yml

@@ -18,7 +18,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
     - name: Check Tabs
       run: |
@@ -39,10 +39,10 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
     #- name: Set up Python
-    #  uses: actions/setup-python@v2
+    #  uses: actions/setup-python@0a5c61591373683505ea898e09a3ea4f39ef2b9c # v5.0.0
     #  with:
     #    python-version: 3.7
 
@@ -61,13 +61,13 @@ jobs:
     #    if ! diff src/openclext.cpp temp/openclext.cpp; then echo 'Please ensure all files are generated correctly.'; false; fi
 
     - name: Get OpenCL Headers
-      uses: actions/checkout@v3
+      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       with:
         repository: KhronosGroup/OpenCL-Headers
         path: external/OpenCL-Headers
 
     - name: Get OpenCL ICD Loader
-      uses: actions/checkout@v3
+      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       with:
         repository: KhronosGroup/OpenCL-ICD-Loader
         path: external/OpenCL-ICD-Loader
@@ -145,16 +145,16 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
     - name: Get OpenCL Headers
-      uses: actions/checkout@v3
+      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       with:
         repository: KhronosGroup/OpenCL-Headers
         path: external/OpenCL-Headers
 
     - name: Get OpenCL ICD Loader
-      uses: actions/checkout@v3
+      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       with:
         repository: KhronosGroup/OpenCL-ICD-Loader
         path: external/OpenCL-ICD-Loader