fix: update deprecated GitHub Actions to current versions

Update artifact and CodeQL actions to prevent workflow failures:
- actions/upload-artifact@v3 → v4 (5 instances)
- actions/download-artifact@v3 → v4 (1 instance)
- codecov/codecov-action@v3 → v5 (1 instance)
- github/codeql-action/*@V3 → v4 (2 instances)

These v3 artifact actions are deprecated and will stop working on
January 30, 2025. The v4 versions provide up to 10x faster operations
with better compression and deduplication.

Author: JesperDramsch

.github/workflows/codeql.yml

@@ -24,8 +24,8 @@ jobs:
     steps:
     - uses: actions/checkout@v5
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v3
+      uses: github/codeql-action/init@v4
       with:
         languages: python
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v3
+      uses: github/codeql-action/analyze@v4

.github/workflows/e2e-tests.yml

@@ -82,7 +82,7 @@ jobs:
 
       - name: 📊 Upload test results
         if: always()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: playwright-report-${{ matrix.browser }}
           path: |
@@ -92,7 +92,7 @@ jobs:
 
       - name: 📸 Upload screenshots
         if: failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: screenshots-${{ matrix.browser }}
           path: test-results/screenshots/
@@ -146,7 +146,7 @@ jobs:
 
       - name: 📊 Upload mobile test results
         if: always()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: playwright-report-mobile
           path: |
@@ -203,7 +203,7 @@ jobs:
 
       - name: 🖼️ Upload visual diffs
         if: failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: visual-diffs
           path: test-results/visual-diffs/
@@ -225,7 +225,7 @@ jobs:
           node-version: '20'
 
       - name: 📥 Download all artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: all-reports
 

.github/workflows/frontend-tests.yml

@@ -56,7 +56,7 @@ jobs:
           
       - name: 📤 Upload coverage to Codecov
         if: matrix.node-version == '20'
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v5
         with:
           files: ./coverage/lcov.info
           flags: frontend
@@ -65,7 +65,7 @@ jobs:
 
       - name: 📋 Upload test results
         if: always()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: test-results-node-${{ matrix.node-version }}
           path: |
@@ -194,7 +194,7 @@ jobs:
         continue-on-error: true
 
       - name: 📤 Upload built site
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: built-site
           path: _site/