build(deps): bump @nx/nx-linux-arm64-gnu from 20.4.2 to 20.6.4

Bumps [@nx/nx-linux-arm64-gnu](https://github.com/nrwl/nx/tree/HEAD/packages/nx/native-packages/linux-arm64-gnu) from 20.4.2 to 20.6.4.
- [Release notes](https://github.com/nrwl/nx/releases)
- [Commits](https://github.com/nrwl/nx/commits/20.6.4/packages/nx/native-packages/linux-arm64-gnu)

---
updated-dependencies:
- dependency-name: "@nx/nx-linux-arm64-gnu"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -15,7 +15,7 @@
     "@nx/nx-darwin-arm64": "20.3.0",
     "@nx/nx-darwin-x64": "20.5.0",
     "@nx/nx-linux-arm-gnueabihf": "20.6.2",
-    "@nx/nx-linux-arm64-gnu": "20.4.2",
+    "@nx/nx-linux-arm64-gnu": "20.7.0",
     "@nx/nx-linux-arm64-musl": "20.2.2",
     "@nx/nx-linux-x64-gnu": "20.5.0",
     "@nx/nx-linux-x64-musl": "20.6.1",