ci: add install command to build-schematics script

npm/ng-packs/scripts/build-schematics.ts

@@ -48,6 +48,11 @@ async function* copyPackageFiles(packageName: string) {
 (async () => {
   await fse.remove(`../dist/${PACKAGE_TO_BUILD}`);
 
+  await execa('yarn', ['install', '--ignore-scripts'], {
+    stdout: 'inherit',
+    cwd: `../packages/${PACKAGE_TO_BUILD}`,
+  });
+
   await execa(
     'tsc',
     ['-p', `packages/${PACKAGE_TO_BUILD}/tsconfig.json`, '--outDir', `dist/${PACKAGE_TO_BUILD}`],