Upgrade Artifacts Actions using @v3 to @v4 (#20)

* Upgrade to v4

* Upgrade to v4

* Upgrade to v4

Author: morgangibbs87

.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
         working-directory: risc0
 
       - name: Archive build output
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: rust-toolchain-${{ matrix.triple }}
           path: |

.github/workflows/release.yml

@@ -15,7 +15,7 @@ jobs:
       contents: write
     steps:
     - name: Download artifacts
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         path: artifacts
     - name: Compress artifacts

compiler/rustc_codegen_cranelift/.github/workflows/main.yml

@@ -227,14 +227,14 @@ jobs:
 
     - name: Upload prebuilt cg_clif
       if: matrix.os == 'windows-latest' || matrix.env.TARGET_TRIPLE != 'x86_64-pc-windows-gnu'
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: cg_clif-${{ matrix.env.TARGET_TRIPLE }}
         path: cg_clif.tar.xz
 
     - name: Upload prebuilt cg_clif (cross compile)
       if: matrix.os != 'windows-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: cg_clif-${{ runner.os }}-cross-x86_64-mingw
         path: cg_clif.tar.xz