Potential fix for not being able to deploy docs changes

[jamie-taylor-rjj]

Rationale for this PR

This PR attempts to fix the broken docs deploy here by setting the correct permissions on the pages.yml build pipeline.

PR Checklist

Feel free to either check the following items (by place an x inside of the square brackets) or by replacing the square brackets with a relevant emoji from the following list:

• ✅ to indicate that you have checked something off
• ❎ to indicate that you haven't checked something off
• ❓ to indicate that something might not be relevant (writing tests for documentation changes, for instance)

Essential

These items are essential and must be completed for each commit. If they are not completed, the PR may not be accepted.

• [:question:] I have added tests to the OwaspHeaders.Core.Tests project
• [:question:] I have run the dotnet-format command and fixed any .editorconfig issues
• [:question:] I have ensured that the code coverage has not dropped below 65%
• [:question:] I have increased the version number in OwaspHeaders.Core.csproj (only relevant for code changes)
• [:question:] I have updated the changelog in the root of the repository
• [:question:] I have avoided using primary constructors in the example project (see README for details)

Note

The changelog in the docs/ directory will be updated automatically when PRs are merged into main.

Optional

• [:question:] I have documented the new feature in the docs directory
• [:question:] I have provided a code sample, showing how someone could use the new code

Any Other Information

As this is a workflow specific change, no tests are necessary.

Warning

When merged to main, this PR may attempt to create a new release. Please cancel that build and deploy if it does.

[GaProgMan]

Cancelled the build run as it isn't required.

[GaProgMan]

Let's get this merged!