Update GitHub Actions to use specific versions

Add SHA pinning for Unit Tests GitHub Actions

Author: WebbinRoot

.github/workflows/unit-tests.yml

@@ -19,11 +19,13 @@ jobs:
         java-version: ["25"]
 
     steps:
-      - uses: actions/checkout@v6
+      # v6.0.2
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           fetch-depth: 1
 
-      - uses: actions/setup-java@v5
+      # v5.2.0
+      - uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654
         with:
           distribution: temurin
           java-version: ${{ matrix.java-version }}