ci: update actions/upload-artifact@v3 to v4

Author: Xyene

.github/workflows/build-deb.yml

@@ -23,7 +23,7 @@ jobs:
           # Because actions/upload-artifact will refuse to upload relative paths...
           mv ../*.deb .
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: Packages
           path: '*.deb'

.github/workflows/build.yml

@@ -91,7 +91,7 @@ jobs:
           strip magic-trace
           upx -9 magic-trace
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: magic-trace
           path: magic-trace