CI: Updated actions/checkout and actions/upload-artifact

Addresses warnings of Node.js 16 actions being deprecated and
actions/upload-artifactv1, v2 and v3 being deprecated.

.github/workflows/rust.yml

@@ -17,47 +17,47 @@ jobs:
   build-ubuntu:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: Swatinem/rust-cache@v2
     - run: cargo build --verbose --release
     - run: cargo install cargo-packager --locked
     - run: cargo packager --release
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: Raccoin.AppImage
         path: target/release/raccoin_*.AppImage
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: Raccoin.deb
         path: target/release/raccoin_*.deb
 
   build-windows:
     runs-on: windows-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: Swatinem/rust-cache@v2
     - run: cargo build --verbose --release
     - run: cargo install cargo-packager --locked
     - run: cargo packager --release
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: Raccoin-setup.exe
         path: target/release/raccoin_*-setup.exe
 
   build-macos:
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: Swatinem/rust-cache@v2
     - run: cargo build --verbose --release
     - run: cargo install cargo-packager --locked
     - run: cargo packager --release
     - run: ditto -c -k --sequesterRsrc --keepParent target/release/Raccoin.app Raccoin.app.zip
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: Raccoin.app
         path: Raccoin.app.zip
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: Raccoin.dmg
         path: target/release/Raccoin_*.dmg