Dependabot reports an unknown error

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Package ecosystem

pip

### Package manager version

_No response_

### Language version

_No response_

### Manifest location and content before the Dependabot update

https://github.com/pyca/cryptography/tree/main/.github/requirements:

- `.github/requirements/build-requirements.in`
- `.github/requirements/build-requirements.txt`
- `.github/requirements/publish-requirements.in`
- `.github/requirements/publish-requirements.txt`

### dependabot.yml content

```
version: 2
updates:
- package-ecosystem: "github-actions"
directory: "/"
schedule:
interval: "daily"
time: "06:00"
timezone: "America/New_York"
open-pull-requests-limit: 1024

- package-ecosystem: "github-actions"
directory: "/.github/actions/cache/"
schedule:
interval: "daily"
time: "06:00"
timezone: "America/New_York"
open-pull-requests-limit: 1024
- package-ecosystem: "github-actions"
directory: "/.github/actions/upload-coverage/"
schedule:
interval: "daily"
time: "06:00"
timezone: "America/New_York"
open-pull-requests-limit: 1024
- package-ecosystem: "github-actions"
directory: "/.github/actions/fetch-vectors/"
schedule:
interval: "daily"
time: "06:00"
timezone: "America/New_York"
open-pull-requests-limit: 1024

- package-ecosystem: cargo
directory: "/src/rust/"
schedule:
interval: daily
time: "06:00"
timezone: "America/New_York"
allow:
# Also update indirect dependencies
- dependency-type: all
open-pull-requests-limit: 1024

- package-ecosystem: pip
directory: "/"
schedule:
interval: daily
time: "06:00"
timezone: "America/New_York"
allow:
# Also update indirect dependencies
- dependency-type: all
open-pull-requests-limit: 1024

- package-ecosystem: pip
directory: "/.github/requirements/"
schedule:
interval: daily
time: "06:00"
timezone: "America/New_York"
allow:
# Also update indirect dependencies
- dependency-type: all
open-pull-requests-limit: 1024
```

### Updated dependency

_No response_

### What you expected to see, versus what you actually saw

The logs contain the following error:

```
updater | 2023/12/08 11:26:11 ERROR Error processing pydantic[email] (RuntimeError)
updater | 2023/12/08 11:26:11 ERROR No files have changed!
updater | 2023/12/08 11:26:11 ERROR /home/dependabot/python/lib/dependabot/python/file_updater.rb:42:in `updated_dependency_files'
updater | 2023/12/08 11:26:11 ERROR /home/dependabot/dependabot-updater/lib/dependabot/dependency_change_builder.rb:89:in `generate_dependency_files'
updater | 2023/12/08 11:26:11 ERROR /home/dependabot/dependabot-updater/lib/dependabot/dependency_change_builder.rb:37:in `run'
updater | 2023/12/08 11:26:11 ERROR /home/dependabot/dependabot-updater/lib/dependabot/dependency_change_builder.rb:26:in `create_from'
updater | 2023/12/08 11:26:11 ERROR /home/dependabot/dependabot-updater/lib/dependabot/updater/operations/update_all_versions.rb:128:in `check_and_create_pull_request'
updater | 2023/12/08 11:26:11 ERROR /home/dependabot/dependabot-updater/lib/dependabot/updater/operations/update_all_versions.rb:60:in `check_and_create_pr_with_error_handling'
updater | 2023/12/08 11:26:11 ERROR /home/dependabot/dependabot-updater/lib/dependabot/updater/operations/update_all_versions.rb:35:in `block in perform'
updater | 2023/12/08 11:26:11 ERROR /home/dependabot/dependabot-updater/lib/dependabot/updater/operations/update_all_versions.rb:35:in `each'
updater | 2023/12/08 11:26:11 ERROR /home/dependabot/dependabot-updater/lib/dependabot/updater/operations/update_all_versions.rb:35:in `perform'
updater | 2023/12/08 11:26:11 ERROR /home/dependabot/dependabot-updater/lib/dependabot/updater.rb:64:in `run'
updater | 2023/12/08 11:26:11 ERROR /home/dependabot/dependabot-updater/lib/dependabot/update_files_command.rb:41:in `perform_job'
updater | 2023/12/08 11:26:11 ERROR /home/dependabot/dependabot-updater/lib/dependabot/base_command.rb:53:in `run'
updater | 2023/12/08 11:26:11 ERROR bin/update_files.rb:24:in `'
```

I expect either no error or a more specific error message.

### Native package manager behavior

_No response_

### Images of the diff or a link to the PR, issue, or logs

_No response_

### Smallest manifest that reproduces the issue

_No response_