Bump @rollup/plugin-terser from 0.4.3 to 0.4.4 (esphome#535)

Bumps [@rollup/plugin-terser](https://github.com/rollup/plugins/tree/HEAD/packages/terser) from 0.4.3 to 0.4.4.
- [Changelog](https://github.com/rollup/plugins/blob/master/packages/terser/CHANGELOG.md)
- [Commits](https://github.com/rollup/plugins/commits/terser-v0.4.4/packages/terser)

---
updated-dependencies:
- dependency-name: "@rollup/plugin-terser"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -15,7 +15,7 @@
     "@rollup/plugin-commonjs": "^24.0.1",
     "@rollup/plugin-json": "^6.0.0",
     "@rollup/plugin-node-resolve": "^15.0.1",
-    "@rollup/plugin-terser": "^0.4.0",
+    "@rollup/plugin-terser": "^0.4.4",
     "@rollup/plugin-typescript": "^11.0.0",
     "fs-extra": "^11.1.1",
     "monaco-editor": "^0.34.1",