Add dependabot alert update endpoint

[mcollao-hc]

Adds support for https://docs.github.com/en/rest/dependabot/alerts?apiVersion=2022-11-28#update-a-dependabot-alert.

Closes#2922. This is also a dupe of #2955, which hasn't seen action in a few weeks and had build errors.

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[codecov]

Codecov Report

Merging #2981 (82aef03) into master (f643c0f) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@ Coverage Diff @@## master #2981 +/- ##
=======================================
Coverage 98.11% 98.11% =======================================
Files 149 149 Lines 12796 12808 +12 =======================================
+ Hits 12555 12567 +12 
Misses 166 166 Partials 75 75 

Files	Coverage Δ
github/dependabot_alerts.go	100.00% <100.00%> (ø)

[gmlewis]

Thank you, @mcollao-hc - I apologize for the delay in taking a look at this.

Please perform step 4 in CONTRIBUTING.md and push the results to this PR.

[mcollao-hc]

No worries, thanks for the review. Pushed the files created from running the script.

[gmlewis]

Did you run both ./script/generate.sh and ./script/lint.sh ?

[gmlewis]

I ask because we have a new metadata field required in the docs for each endpoint (that I believe should be updated for you) that is missing.

[mcollao-hc]

Ok think I got it. Had to rebase to pick up the new requirements and added the metadata field to the UpdateAlert function since it wasn't being added automatically.

[gmlewis]

Thank you, @mcollao-hc !
LGTM.

Awaiting second LGTM+Approval from any other contributor to this repo before merging.

[gmlewis]

Thank you, @WillAbides !
Merging.