Upgrade corepack for neovim publish

Author: AndreasArvidsson

.github/workflows/deploy.yaml

@@ -70,6 +70,10 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      # FIXME: https://github.com/cursorless-dev/cursorless/issues/2817
+      - name: Upgrade Corepack
+        run: npm install --global [email protected]
+
       - name: Enable Corepack
         run: corepack enable