Update GitHub Actions (#1124)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/main.yml

@@ -36,7 +36,7 @@ jobs:
       - name: Upload a Build Artifact
         if: always() && steps.prepare-artifact.outcome == 'success'
         continue-on-error: true
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: pull-request-payload
           path: pull_request_payload.json

.github/workflows/publish.yml

@@ -72,7 +72,7 @@ jobs:
         run: uv build --all-packages
 
       - name: Upload build files
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: "dist"
           path: "dist/"
@@ -91,7 +91,7 @@ jobs:
 
     steps:
       - name: Download the distribution files from build artifact
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           name: "dist"
           path: "dist/"
@@ -116,7 +116,7 @@ jobs:
 
     steps:
       - name: Download the distribution files from build artifact
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           name: "dist"
           path: "dist/"