update test commands

Author: jordaaash

ci/js-test-token.sh

@@ -6,10 +6,11 @@ source ./ci/solana-version.sh install
 
 set -x
 cd token/js
-npm install
-npm run lint
-npm run flow
-npm run defs
-npm run test
-npm run start-with-test-validator
-PROGRAM_VERSION=2.0.4 npm run start-with-test-validator
+
+yarn install --pure-lockfile
+yarn lint
+yarn build
+yarn test
+
+yarn start-with-test-validator
+PROGRAM_VERSION=2.0.4 yarn start-with-test-validator