Pin actions/checkout version

F-529

Author: julek-wolfssl

.github/workflows/ada.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@master
+    - uses: actions/checkout@v4
 
     - name: Install alire
       uses: alire-project/setup-alire@v5

.github/workflows/win-csharp-test.yml

@@ -27,7 +27,7 @@ jobs:
 
     steps:
         - name: Pull wolfssl
-          uses: actions/checkout@master
+          uses: actions/checkout@v4
           with:
             repository: wolfssl/wolfssl
             path: wolfssl