Would add the following to Cargo.toml: version = 1.0.0
Would add the following to package.json: 4.5.6
Would add the following to pyproject.toml: 4.5.6
Would add the following to FIRST_CHANGELOG.md: 
## 1.0.0 ([DATE])

### Fixes

- A bug fix

Would add the following to SECOND_CHANGELOG.md: 
## 4.5.6 ([DATE])

### Fixes

- A bug fix

Would add the following to THIRD_CHANGELOG.md: 
## 4.5.6 ([DATE])

### Fixes

- A bug fix

Would add files to git:
  Cargo.toml
  package.json
  pyproject.toml
  FIRST_CHANGELOG.md
  SECOND_CHANGELOG.md
  THIRD_CHANGELOG.md