chore(deps): update tool-updates to v4

Author: renovate[bot]

.github/workflows/build.yml

@@ -78,9 +78,9 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: docker/setup-buildx-action@v3
+      - uses: docker/setup-buildx-action@v4
 
-      - uses: docker/login-action@v3
+      - uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: ${{ github.actor }}

.github/workflows/mitmproxy.yml

@@ -20,9 +20,9 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: docker/setup-buildx-action@v3
+      - uses: docker/setup-buildx-action@v4
 
-      - uses: docker/login-action@v3
+      - uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: ${{ github.actor }}