**Description**

It would be nice to be able to specify resources for the `git-sync` sidecar in the helm chart values.

**Use case / motivation**

I don't want to use keda for autoscaling and would like to setup a HPA myself. However this is currently not possible since it is not possible to specify resources for the `git-sync` sidecar.

**Are you willing to submit a PR?**

Yes, I am willing to submit a PR.

**Related Issues**

Not that I know of.

chart/tests/test_git_sync_webserver.py
docs = render_chart(
            values={"dags": {"gitSync": {"enabled": True}, "persistence": {"enabled": True}}},
            show_only=["templates/webserver/webserver-deployment.yaml"],
        )
        assert "RELEASE-NAME-airflow-webserver" == jmespath.search(
            "spec.template.spec.serviceAccountName", docs[0]
        )
    @parameterized.expand(
        [
            (
                "2.0.0",
                True,
            ),
            (
                "2.0.2",
                True,
            ),
            (
                "1.10.14",
                False,