actions: bump to v6

Signed-off-by: Simon Beaudoin <sbeaudoi@qti.qualcomm.com>

Author: simonbeaudoin0935

.github/workflows/qcom-release-reusable-workflow.yml

@@ -281,7 +281,7 @@ jobs:
           sed -i 's/:/_/g' *.build
 
       - name: Upload build artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: build-artifacts
           path: build/
@@ -291,7 +291,7 @@ jobs:
     runs-on: 'lecore-prd-u2404-arm64-xlrg-od-ephem'
     steps:
       - name: Download build artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v6
         with:
           name: build-artifacts
           path: build/