feat: [Grafeas] A new message File is added (#8857)

* feat: A new message `File` is added
feat: A new field `files` is added to message `.grafeas.v1.DiscoveryOccurrence`
feat: A new field `return_partial_success` is added to message `.grafeas.v1.ListOccurrencesRequest`
feat: A new field `unreachable` is added to message `.grafeas.v1.ListOccurrencesResponse`
feat: A new field `return_partial_success` is added to message `.grafeas.v1.ListNotesRequest`
feat: A new field `unreachable` is added to message `.grafeas.v1.ListNotesResponse`
feat: A new message `Risk` is added
feat: A new message `CISAKnownExploitedVulnerabilities` is added
feat: A new message `ExploitPredictionScoringSystem` is added
feat: A new field `data` is added to message `.grafeas.v1.SecretOccurrence`
feat: A new field `digest` is added to message `.grafeas.v1.SecretOccurrence`
feat: A new value `SECRET_KIND_GCP_API_KEY` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_GCP_OAUTH2_CLIENT_CREDENTIALS` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_GCP_OAUTH2_ACCESS_TOKEN` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_ANTHROPIC_ADMIN_API_KEY` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_ANTHROPIC_API_KEY` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_AZURE_ACCESS_TOKEN` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_AZURE_IDENTITY_TOKEN` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_DOCKER_HUB_PERSONAL_ACCESS_TOKEN` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_GITHUB_APP_REFRESH_TOKEN` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_GITHUB_APP_SERVER_TO_SERVER_TOKEN` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_GITHUB_APP_USER_TO_SERVER_TOKEN` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_GITHUB_CLASSIC_PERSONAL_ACCESS_TOKEN` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_GITHUB_FINE_GRAINED_PERSONAL_ACCESS_TOKEN` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_GITHUB_OAUTH_TOKEN` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_HUGGINGFACE_API_KEY` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_OPENAI_API_KEY` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_PERPLEXITY_API_KEY` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_STRIPE_SECRET_KEY` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_STRIPE_RESTRICTED_KEY` is added to enum `SecretKind`
feat: A new value `SECRET_KIND_STRIPE_WEBHOOK_SECRET` is added to enum `SecretKind`
feat: A new field `risk` is added to message `.grafeas.v1.VulnerabilityOccurrence`
docs: A comment for enum value `SECRET_KIND_GCP_SERVICE_ACCOUNT_KEY` in enum `SecretKind` is changed

PiperOrigin-RevId: 855331622

Source-Link: googleapis/googleapis@4066512

Source-Link: googleapis/googleapis-gen@94811d7
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Author: gcf-owl-bot[bot]