chore: pin GitHub Actions to SHAs (#1625)

.github/workflows/vscode-extension.yml

@@ -17,13 +17,13 @@ jobs:
       OVSX_PAT: ${{ secrets.OVSX_PAT }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       - name: Setup bun
-        uses: oven-sh/setup-bun@v2
+        uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2.2.0
 
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: '20'
 
@@ -45,14 +45,14 @@ jobs:
         run: bunx ovsx publish packages/vscode/*.vsix -p "$OVSX_PAT"
 
       - name: Upload VSIX artifact
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: openchamber-vscode-vsix
           path: packages/vscode/*.vsix
 
       - name: Attach VSIX to GitHub Release
         if: startsWith(github.ref, 'refs/tags/')
-        uses: softprops/action-gh-release@v2
+        uses: softprops/action-gh-release@3bb12739c298aeb8a4eeaf626c5b8d85266b0e65 # v2.6.2
         with:
           files: packages/vscode/*.vsix
           generate_release_notes: false