Update Terraform grafana to v2

[astronaut-panda[bot]]

This PR contains the following updates:

Package	Type	Update	Change
grafana (source)	required_provider	major	1.43.0 -> 2.0.0

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Release Notes

grafana/terraform-provider-grafana (grafana)

### [`v2.0.0`](https://togithub.com/grafana/terraform-provider-grafana/releases/tag/v2.0.0) [Compare Source](https://togithub.com/grafana/terraform-provider-grafana/compare/v1.43.0...v2.0.0) #### What's Changed - Datasource: Remove deprecated fields by [@​julienduchesne](https://togithub.com/julienduchesne) in [https://github.com/grafana/terraform-provider-grafana/pull/963](https://togithub.com/grafana/terraform-provider-grafana/pull/963) - Remove deprecated resources by [@​julienduchesne](https://togithub.com/julienduchesne) in [https://github.com/grafana/terraform-provider-grafana/pull/964](https://togithub.com/grafana/terraform-provider-grafana/pull/964) - Remove `cloud_stack_slug` attribute from API key by [@​julienduchesne](https://togithub.com/julienduchesne) in [https://github.com/grafana/terraform-provider-grafana/pull/965](https://togithub.com/grafana/terraform-provider-grafana/pull/965) - Remove unused fields in `synthetic_monitoring_installation` by [@​julienduchesne](https://togithub.com/julienduchesne) in [https://github.com/grafana/terraform-provider-grafana/pull/966](https://togithub.com/grafana/terraform-provider-grafana/pull/966) - Dashboard: Remove `slug` and its migration by [@​julienduchesne](https://togithub.com/julienduchesne) in [https://github.com/grafana/terraform-provider-grafana/pull/967](https://togithub.com/grafana/terraform-provider-grafana/pull/967) **Full Changelog**: https://github.com/grafana/terraform-provider-grafana/compare/v1.43.0...v2.0.0

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