chore(ci): Fix GitHub CI [ggj]

[miraleung]

No description provided.

[codecov]

Codecov Report

Merging #773 (cd91678) into master (02eab0e) will decrease coverage by 0.46%.
The diff coverage is 54.02%.

@@            Coverage Diff             @@
##           master     #773      +/-   ##
==========================================
- Coverage   91.71%   91.25%   -0.47%     
==========================================
  Files         140      140              
  Lines       14795    14884      +89     
  Branches     1052     1061       +9     
==========================================
+ Hits        13569    13582      +13     
- Misses        942     1011      +69     
- Partials      284      291       +7     

Impacted Files	Coverage Δ
...api/generator/gapic/composer/grpc/GrpcContext.java	95.00% <ø> (ø)
...omposer/grpc/ServiceStubSettingsClassComposer.java	100.00% <ø> (ø)
.../com/google/api/generator/gapic/model/Message.java	62.16% <18.18%> (-18.61%)	⬇️
...ic/composer/defaultvalue/DefaultValueComposer.java	88.88% <42.85%> (-5.04%)	⬇️
...common/AbstractServiceClientTestClassComposer.java	84.26% <46.51%> (-3.75%)	⬇️
...mmon/AbstractServiceStubSettingsClassComposer.java	97.16% <50.00%> (-1.90%)	⬇️
...google/api/generator/gapic/protoparser/Parser.java	43.71% <60.00%> (+0.50%)	⬆️
...ic/composer/grpc/MockServiceImplClassComposer.java	99.53% <66.66%> (+<0.01%)	⬆️
...ic/composer/common/ServiceClientClassComposer.java	98.45% <100.00%> (ø)
...ic/composer/grpc/GrpcServiceStubClassComposer.java	97.97% <100.00%> (ø)
... and 8 more

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