BLD TST Update actions/upload-artifact

v2 is deprecated, updating to v4

Author: luispedro

.github/workflows/build_static_embedded_nix.yml

@@ -25,14 +25,14 @@ jobs:
     - run: nix build -f release.nix projectCross.musl64.hsPkgs.NGLess.components.exes.ngless --out-link ngless-static
 
     - name: "Upload with embeds"
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: ngless_static-embed
         path: ngless-static-embed/bin/ngless
 
 
     - name: "Upload without embeds"
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: ngless_static
         path: ngless-static/bin/ngless