Add support for repositories body parameter when creating installation access tokens

[dwnusbaum]

Description

This PR adds support for the repositories body parameter as specified in https://docs.github.com/en/rest/apps/apps#create-an-installation-access-token-for-an-app to GHAppCreateTokenBuilder.

Originally, if you wanted to generate an installation access token limited to a specific repository, the /app/installations/{installation_id}/access_tokens endpoint required you to pass a repository_ids body parameter. That parameter is a bit awkward because generally you will need to make an additional API call to retrieve the ID of a repository given its name.

At some point (I could not find a changelog) GitHub added a repositories body parameter that works like repository_ids, but accepts repository names rather than IDs, which is a nice improvement.

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  • If this PR fixes one or more issues, include "Fixes #" lines for each issue.
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[dwnusbaum]

From a bit of reading I think this API is out of beta now, but I added this annotation anyways to match the other methods in this class. Let me know if I should remove the annotation or anything.

[dwnusbaum]

IDK if this is the preferred approach, but it matches the above createToken test (I ran it against a real app and everything though when generating the stubs and then just changed the names to match the other test).

[codecov]

Codecov Report

Merging #1492 (bd27d76) into main (08785e5) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##               main    #1492   +/-   ##
=========================================
  Coverage     78.80%   78.81%           
- Complexity     2113     2114    +1     
=========================================
  Files           202      202           
  Lines          6427     6429    +2     
  Branches        361      361           
=========================================
+ Hits           5065     5067    +2     
  Misses         1152     1152           
  Partials        210      210           

Impacted Files	Coverage Δ
...va/org/kohsuke/github/GHAppCreateTokenBuilder.java	85.71% <100.00%> (+1.50%)	⬆️

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