feat: migrate to @actions/github

[nogic1008]

No description provided.

[commit-lint]

Chore

• deps: add @actions/github package (78b6a95)
• downgrade @actions/http-client to 1.0.9 (3bbf1f6)
• add @octokit/webhooks-definitions (9b1b479)
• deps: remove @octokit/rest (a95b28e)

Performance Improvements

• use getOctokit() (4fe1f13)

Code Refactoring

• read github.context directly (e555c21)
• read context.payload directly (dfdaf22)

Tests

• ignore main entry on coverage (1c61702)

Contributors

nogic1008

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[codecov]

Codecov Report

Merging #443 (a95b28e) into master (0193aa5) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #443   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            5         4    -1     
  Lines           67        48   -19     
  Branches         8         6    -2     
=========================================
- Hits            67        48   -19     

Impacted Files	Coverage Δ
src/input-helper.ts	100.00% <ø> (ø)
src/event.ts	100.00% <100.00%> (ø)
src/main.ts	100.00% <100.00%> (ø)
src/send-comment.ts	100.00% <100.00%> (ø)

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