Removing redundant things from CI.

Author: RobinTail

.github/workflows/ci.yml

@@ -25,25 +25,17 @@ jobs:
         with:
           node-version: ${{ matrix.node }}
 
-      - name: Enable Corepack
-        run: corepack enable
-
       - name: Setup Node.js ${{ matrix.node }} with cache
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
           cache: yarn
-        env:
-          YARN_IGNORE_NODE: 1
 
       - name: Install Dependencies
-        run: yarn --immutable
-        env:
-          YARN_IGNORE_NODE: 1
+        run: yarn
 
       - name: Build, Lint and Test
-        run: yarn run-s build lint test typecov
+        run: yarn run-s build lint test
         env:
           EFF_NO_LINK_RULES: true
           PARSER_NO_WATCH: true
-          YARN_IGNORE_NODE: 1