chore: Update Alpine version in README.md

Updated the README to reflect changes in Alpine and Rsync versions, and updated the action versions from v8 to v9.

.github/workflows/ci-validating-linting-testing.yml

@@ -23,7 +23,7 @@ jobs:
     name: Test BATS Suite
     steps:
     - name: Checkout code
-      uses: actions/checkout@v7
+      uses: actions/checkout@v4
 
     - name: Install BATS
       run: |
@@ -38,7 +38,7 @@ jobs:
     name: Validate Action Definition
     steps:
     - name: Checkout code
-      uses: actions/checkout@v7
+      uses: actions/checkout@v4
 
     - name: Validate action.yml
       run: |
@@ -81,7 +81,7 @@ jobs:
     needs: [validate-action, action-structure]
     steps:
     - name: Checkout code
-      uses: actions/checkout@v7
+      uses: actions/checkout@v4
 
     - name: Build Docker image
       run: |
@@ -94,7 +94,7 @@ jobs:
     name: Validate Action Structure
     steps:
     - name: Checkout code
-      uses: actions/checkout@v7
+      uses: actions/checkout@v4
 
     - name: Check required files
       run: |
@@ -128,7 +128,7 @@ jobs:
     name: Lint Shell Scripts
     steps:
     - name: Checkout code
-      uses: actions/checkout@v7
+      uses: actions/checkout@v4
 
     - name: Install ShellCheck
       run: |
@@ -151,7 +151,7 @@ jobs:
     needs: [test, validate-action, docker-build, action-structure, lint-shell]
     steps:
     - name: Checkout code
-      uses: actions/checkout@v7
+      uses: actions/checkout@v4
 
     - name: Final integration check
       run: |

.github/workflows/snyk-docker-vulnerability-scan.yml

@@ -19,7 +19,7 @@ jobs:
       actions: read
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v7
+    - uses: actions/checkout@v4
     - name: Build a Docker image
       run: docker build -t burnett01/rsync-deployments .
     - name: Run Snyk to check Docker image for vulnerabilities