use node-provided npm

Author: mansona

.github/workflows/ci.yml

@@ -23,7 +23,6 @@ jobs:
         with:
           node-version: 18.x
           cache: npm
-      - run: npm i -g npm@8
       - run: npm ci
       - run: npx percy exec -- npm run test:docs
 
@@ -38,7 +37,6 @@ jobs:
         with:
           node-version: 18.x
           cache: npm
-      - run: npm i -g npm@8
       - run: npm ci
       - run: npm run lint
       - run: npx percy exec -- npm run test
@@ -53,7 +51,6 @@ jobs:
         with:
           node-version: 18.x
           cache: npm
-      - run: npm i -g npm@8
       - run: npm install --no-shrinkwrap
       - run: npm run test:ember
 
@@ -84,7 +81,6 @@ jobs:
         with:
           node-version: 18.x
           cache: npm
-      - run: npm i -g npm@8
       - run: npm ci
       - name: Run Tests
         run: ./node_modules/.bin/ember try:one ${{ matrix.try-scenario }}
@@ -109,7 +105,6 @@ jobs:
         with:
           node-version: 18.x
           cache: npm
-      - run: npm i -g npm@8
       - run: npm ci
       - name: Run Tests
         id: tests