Bump actions/upload-artifact from 5 to 6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/generate-redirector-config.yml

@@ -77,7 +77,7 @@ jobs:
           fi
 
       - name: "Upload ${{ matrix.platform }} index"
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: ${{ matrix.platform }}
           path: destination
@@ -213,7 +213,7 @@ jobs:
           fi
 
       - name: Upload ${{ env.STATUS }} for ${{ matrix.node }}
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: debs-beta-${{ env.SERVER_ID }}
           path: status
@@ -272,7 +272,7 @@ jobs:
           fi
 
       - name: Upload ${{ env.STATUS }} for ${{ matrix.node }}
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: debs-${{ env.SERVER_ID }}
           path: status
@@ -332,7 +332,7 @@ jobs:
           fi
 
       - name: Upload ${{ env.STATUS }} for ${{ matrix.node }}
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: dl-${{ env.SERVER_ID }}
           path: status
@@ -392,7 +392,7 @@ jobs:
           fi
 
       - name: Upload ${{ env.STATUS }} for ${{ matrix.node }}
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: archive-${{ env.SERVER_ID }}
           path: status

.github/workflows/generate-release-logs.yml

@@ -157,7 +157,7 @@ jobs:
             echo "<p><br>Stay up to date with the latest Armbian news, development highlights, and tips — delivered straight to your inbox." >> summary.md
 
       - name: Upload raw data (artifacts)
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: pr-digest
           path: out/

.github/workflows/mirror.yml

@@ -60,7 +60,7 @@ jobs:
           EOT
           python3 split.py
       - name: "Upload JSON parts"
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: parts
           path: |

.github/workflows/wireless-performance-autotest.yml

@@ -232,7 +232,7 @@ jobs:
 
        - name: "Upload test summary"
          timeout-minutes: 3
-         uses: actions/upload-artifact@v5
+         uses: actions/upload-artifact@v6
          with:
            name: test-${{ env.DEVICE }}
            path: test