chore: use netlify-cli as a regular dev dep

Instead of adding nondeterminism to our CI by installing netlify-cli@latest on each run, just
install it as a regular dev dep and let Renovate handle bumps.

In the case of the next.js repo e2e tests, reference this repo (which is guaranteed to be a sibling
directory) to access the netlify-cli binary.

.github/workflows/run-tests.yml

@@ -72,9 +72,6 @@ jobs:
         env:
           NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
         run: |
-          # TODO(serhalp) Unpin version once
-          # https://netlify.slack.com/archives/C07686YAY13/p1718139257978049 is resolved.
-          npm i -g [email protected]
           netlify login
       - name: Get installed Playwright version
         id: playwright-version
@@ -208,9 +205,6 @@ jobs:
         env:
           NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
         run: |
-          # TODO(serhalp) Unpin version once
-          # https://netlify.slack.com/archives/C07686YAY13/p1718139257978049 is resolved.
-          npm i -g [email protected]
           netlify login
       - name: Resolve Next.js version
         id: resolve-next-version

.github/workflows/test-e2e.yml

@@ -179,9 +179,6 @@ jobs:
         run: npm run build
         working-directory: ${{ env.runtime-path }}
 
-      - name: add netlify cli
-        run: npm install -g netlify-cli
-
       - name: Install Playwright Browsers
         run: npx playwright install --with-deps
         working-directory: ${{ env.next-path }}