Update GitHub Actions workflows to use specific versions of actions using hashes (supply chain security)

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
 
       - name: Install Linux dependencies
         run: |
@@ -20,7 +20,7 @@ jobs:
           sudo apt-get install -y libgtk-3-dev cmake ninja-build clang pkg-config libgtk-3-dev liblzma-dev
 
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065
         with:
           python-version: '3.13'
 
@@ -35,7 +35,7 @@ jobs:
         run: poetry run flet build linux
 
       - name: Upload Linux artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02
         with:
           name: ren-browser-linux
           path: build/linux
@@ -46,10 +46,10 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
 
       - name: Set up JDK
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@c5195efecf7bdfc987ee8bae7a71cb8b11521c00
         with:
           distribution: 'zulu'
           java-version: '17'
@@ -60,7 +60,7 @@ jobs:
           sudo apt-get install -y cmake ninja-build clang pkg-config
 
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065
         with:
           python-version: '3.13'
 
@@ -75,7 +75,7 @@ jobs:
         run: poetry run flet build apk
 
       - name: Upload APK artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02
         with:
           name: ren-browser-apk
           path: build/apk