[Schema Inaccuracy] date fields missing date-time format

[brandonchinn178]

Schema Inaccuracy

The following fields are named date, but only have "type": "string". I believe they should also have the date-time format.

paths."/repos/{owner}/{repo}/contents/{path}".put.requestBody.content."application/json".schema.properties.committer.properties.date
paths."/repos/{owner}/{repo}/contents/{path}".put.requestBody.content."application/json".schema.properties.author.properties.date
components.schemas.billing-usage-report.properties.usageItems.items.properties.date
components.schemas.nullable-git-user.properties.date
components.schemas.file-commit.properties.commit.properties.author.properties.date
components.schemas.file-commit.properties.commit.properties.committer.properties.date
components.schemas.git-tag.properties.tagger.properties.date
components.schemas.webhook-status.properties.commit.properties.commit.properties.author.allOf.1.properties.date
components.schemas.webhook-status.properties.commit.properties.commit.properties.committer.allOf.1.properties.date

Expected

format should be set to date-time

Reproduction Steps