chore: add graph toolkit release notification workflow

[SLdragon]

Related PR in graph toolkit repo can be found here: microsoftgraph/microsoft-graph-toolkit#1994

[codecov]

Codecov Report

Merging #7557 (88e825a) into dev (31518ce) will increase coverage by 0.01%.
The diff coverage is 86.20%.

❗ Current head 88e825a differs from pull request most recent head 9759b93. Consider uploading reports for the commit 9759b93 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #7557      +/-   ##
==========================================
+ Coverage   77.08%   77.10%   +0.01%     
==========================================
  Files         591      591              
  Lines       40106    40134      +28     
  Branches     7821     7836      +15     
==========================================
+ Hits        30915    30944      +29     
+ Misses       5881     5878       -3     
- Partials     3310     3312       +2     

Impacted Files	Coverage Δ
...re/src/component/generator/officeAddin/question.ts	67.08% <ø> (-1.21%)	⬇️
packages/fx-core/src/core/FxCoreImplementV3.ts	86.75% <33.33%> (-0.75%)	⬇️
...-core/src/core/middleware/projectVersionChecker.ts	82.50% <62.50%> (-2.80%)	⬇️
packages/fx-core/src/component/utils/pathUtils.ts	86.11% <80.00%> (+7.16%)	⬆️
packages/fx-core/src/component/utils/envUtil.ts	90.00% <92.85%> (-0.91%)	⬇️
packages/fx-core/src/component/middleware/envMW.ts	95.06% <93.75%> (-0.33%)	⬇️
packages/fx-core/src/common/tools.ts	71.49% <100.00%> (ø)
...ackages/fx-core/src/component/coordinator/index.ts	80.49% <100.00%> (ø)
...kages/fx-core/src/component/coordinator/summary.ts	77.64% <100.00%> (+0.26%)	⬆️
...e/src/component/generator/officeAddin/generator.ts	91.80% <100.00%> (+0.13%)	⬆️
... and 7 more

[MuyangAmigo]

In the recipients, can you please include Zhidi, Ji and Yu as well?

[SLdragon]

Sure, no problem~

[SLdragon]

updated