fix(deps): update major dependencies

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -101,7 +101,7 @@ jobs:
 
     - name: Upload security reports
       if: always()
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@v7
       with:
         name: security-reports
         path: |
@@ -141,7 +141,7 @@ jobs:
         himl-config-merger --help
 
     - name: Upload build artifacts
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@v7
       with:
         name: dist-${{ github.sha }}
         path: dist/
@@ -162,7 +162,7 @@ jobs:
         python-version: '3.14'
 
     - name: Download build artifacts
-      uses: actions/download-artifact@v7
+      uses: actions/download-artifact@v8
       with:
         name: dist-${{ github.sha }}
         path: dist/
@@ -198,10 +198,10 @@ jobs:
         fetch-depth: 0  # Needed for setuptools_scm
 
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v3
+      uses: docker/setup-buildx-action@v4
 
     - name: Build Docker image
-      uses: docker/build-push-action@v6
+      uses: docker/build-push-action@v7
       with:
         context: .
         push: false

.github/workflows/publish-docker-image.yml

@@ -23,7 +23,7 @@ jobs:
       # https://github.com/docker/login-action
       - name: Log into registry ${{ env.REGISTRY }}
         if: github.event_name != 'pull_request'
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
@@ -33,14 +33,14 @@ jobs:
       # https://github.com/docker/metadata-action
       - name: Extract Docker metadata
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
 
       # Build and push Docker image with Buildx (don't push on PR)
       # https://github.com/docker/build-push-action
       - name: Build and push Docker image
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}

pyproject.toml

@@ -43,7 +43,7 @@ dev = [
     "pytest-mock==3.15.1",
     "pytest-xdist==3.8.0",
     "coverage[toml]==7.13.0",
-    "black==25.12.0",
+    "black==26.1.0",
     "flake8==7.3.0",
     "mypy==1.19.1",
     "types-PyYAML==6.0.12.20250915",