CI: updated to upload-artifact@v6

Author: frankmorgner

.github/workflows/ape.yml

@@ -25,7 +25,7 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - run: .github/build.sh ape
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v6
       with:
         name: openpace-${{ github.ref_name }}-bin
         path:

.github/workflows/ubuntu.yml

@@ -25,7 +25,7 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - run: .github/build.sh ubuntu
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v6
       with:
         name: openpace-${{ github.ref_name }}-src
         path: