Replaced @percy/exec-action (deprecated) with @percy/cli (#98)

Co-authored-by: Isaac Lee <ijlee2@users.noreply.github.com>

Author: ijlee2

.github/workflows/ci-cd.yml

@@ -79,9 +79,7 @@ jobs:
         if: steps.cache-dependencies.outputs.cache-hit != 'true'
 
       - name: Test
-        uses: percy/exec-action@v0.3.1
-        with:
-          custom-command: yarn test
+        run: npx percy exec -- yarn test
         env:
           PERCY_PARALLEL_NONCE: ${{ env.PERCY_PARALLEL_NONCE }}
           PERCY_PARALLEL_TOTAL: ${{ env.PERCY_PARALLEL_TOTAL }}