chore(deps): update dependency gts to v1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
gts	devDependencies	major	^0.9.0 -> ^1.0.0	source

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Release Notes

google/gts

v1.0.0

Compare Source

This release contains breaking changes. Picking up this update most likely will cause a breaking change in your module. Take care when picking up this update.

Breaking Changes

• We have switched to prettier as the code formatting tool (#​259). gts run fix should migrate your code over to the new style 💅.
• This release drops support for Node 6 which will reach end-of-life in April 2019 (#​256) 💀.
• This release defaults to ES2017 as the TypeScript code generation target. This means that the generated code needs a minimum of Node 8 to run. On the plus side this means that generated code would use native implementation of ES2017 features (e.g. async/await) rather than using poly-fills 🧬. This change is most likely a breaking change for your module. You can override this setting by customizing your tsconfig.json however.
• The tslint configuration has been updated to pick up changes in the Google style guide🧐.
• Assumes that target projects are using TypeScript 3.x+ 🎯.

Other features

• Support for yarn (#​285)

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[callmehiphop]

@JustinBeckwith why does this result in a breaking change? I would think any changes would be purely stylistic.

[JustinBeckwith]

These absolutely are breaking 😄 gts@1.0.0 changes the default target in the tsconfig to es2017, which brings in native async/await. We can't merge these until next week when we drop Node.js 6 from the CI. If the CI for 6 passes with this, we should all be super scared.

[codecov]

Codecov Report

Merging #407 into master will increase coverage by 0.02%.
The diff coverage is 98.8%.

@@           Coverage Diff            @@
##           master   #407      +/-   ##
========================================
+ Coverage   97.97%    98%   +0.02%     
========================================
  Files           5      5              
  Lines         396    401       +5     
  Branches       98     99       +1     
========================================
+ Hits          388    393       +5     
  Misses          3      3              
  Partials        5      5

Impacted Files	Coverage Δ
src/operation.ts	100% <100%> (ø)	⬆️
src/service-object.ts	99% <100%> (ø)	⬆️
src/index.ts	100% <100%> (ø)	⬆️
src/util.ts	97.5% <100%> (ø)	⬆️
src/service.ts	96.29% <87.5%> (+0.06%)	⬆️

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