Remove cache to speed up builds on GitHub Actions

For whatever reason, the post-cache step hangs takes 10x
the time of the build.

.github/workflows/test.yml

@@ -16,14 +16,7 @@ jobs:
         uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node }}
-      - name: Cache npm dependencies
-        uses: actions/cache@v3
-        id: npm-cache
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ matrix.node }}-npm-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-node-${{ matrix.node }}-npm-
+
       - name: Install npm dependencies
         run: npm ci
       - name: Run Vitest tests