Update dependency hashicorp/terraform-provider-hcp to v0.77.0

[tflibsonnet-ci]

(original: tf-libsonnet/libgenerator#236)

This PR contains the following updates:

Package	Update	Change
hashicorp/terraform-provider-hcp	minor	0.76.0 -> 0.77.0

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Release Notes

hashicorp/terraform-provider-hcp (hashicorp/terraform-provider-hcp)

v0.77.0

Compare Source

FEATURES:

• Add hcp_organization_iam_binding resource. [GH-661]
• Add hcp_organization_iam_policy resource. [GH-661]
• Add hcp_project_iam_binding resource. [GH-661]
• Add hcp_project_iam_policy resource. [GH-661]
• Add support to authenticate the provider using credential files. [GH-672]

IMPROVEMENTS:

• Add NewRelic as an observability provider for streaming audit logs and metrics from HCP Vault clusters. [GH-653]
• The change introduces the ability to provide configuration via environment variables, which will allow credentials to be provided via environment variable (either directly or via a creds file). [GH-666]

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