Upgrade Github actions to v4 to fix deprecation warnings

Author: cknitt

Diff for: .github/workflows/ci.yml

@@ -45,10 +45,10 @@ jobs:
         git config --global core.autocrlf false
         git config --global core.eol lf
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Cache OCaml's opam
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.opam
         key: ${{matrix.os}}-rescript-vscode-v4
@@ -59,7 +59,7 @@ jobs:
         ocaml-compiler: 4.14.x
 
     - name: Use Node.js
-      uses: actions/setup-node@v3
+      uses: actions/setup-node@v4
       with:
         node-version: 16
         registry-url: 'https://registry.npmjs.org'
@@ -89,7 +89,7 @@ jobs:
         mv rescript-tools.exe ${{matrix.artifact-folder}}
         tar -cvf binary.tar ${{matrix.artifact-folder}}
 
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: ${{matrix.os}}
         path: binary.tar
@@ -99,10 +99,10 @@ jobs:
     runs-on: ubuntu-20.04
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Use Node.js
-      uses: actions/setup-node@v3
+      uses: actions/setup-node@v4
       with:
         node-version: 16
         registry-url: 'https://registry.npmjs.org'
@@ -111,31 +111,31 @@ jobs:
     - run: npm run compile
 
     - name: Download MacOS binary
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: macos-13
         path: binaries
     - run: tar -xvf binary.tar
       working-directory: binaries
 
     - name: Download MacOS ARM binary
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: macos-14
         path: binaries
     - run: tar -xvf binary.tar
       working-directory: binaries
 
     - name: Download Linux binary
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: ubuntu-20.04
         path: binaries
     - run: tar -xvf binary.tar
       working-directory: binaries
 
     - name: Download Windows binary
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: windows-latest
         path: binaries
@@ -191,19 +191,19 @@ jobs:
       if: startsWith(github.ref, 'refs/tags/')
       run: npx vsce package -o rescript-vscode-${{ steps.tag_name.outputs.tag }}.vsix ${{ steps.tag_name.outputs.tag }} --no-git-tag-version
 
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       if: github.ref != 'refs/heads/master'
       with:
         name: rescript-vscode-${{ steps.vars.outputs.sha_short }}.vsix
         path: rescript-vscode-${{ steps.vars.outputs.sha_short }}.vsix
 
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       if: github.ref == 'refs/heads/master'
       with:
         name: rescript-vscode-latest-master.vsix
         path: rescript-vscode-latest-master.vsix
 
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       if: startsWith(github.ref, 'refs/tags/')
       with:
         name: rescript-vscode-${{ steps.tag_name.outputs.tag }}.vsix