Update ovoenergy to 2.0.0

[timmo001]

Breaking change

Proposed change

Updates and fixes ovoenergy integration.

https://github.com/timmo001/ovoenergy/releases/tag/2.0.0
timmo001/ovoenergy@v1.2.0...2.0.0

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)

Additional information

• This PR fixes or closes issue: fixes OVO energy no longer connecting via integration #115905

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.
• Untested files have been added to .coveragerc.

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[jakeherp]

Changes look good to me, although not sure if my review means anything, as I am not a code owner 😄

[bdraco]

Please move code outside of the try block that is not expected to raise aiohttp.ClientError

[bdraco]

Thanks @timmo001