chore(grpc-ts-health-check): pin @grpc/proto-loader v0.7.7

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@grpc/proto-loader (source)	0.7.2 -> 0.7.7

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Release Notes

grpc/grpc-node

### [`v0.7.7`](https://togithub.com/grpc/grpc-node/releases/tag/%40grpc/proto-loader%400.7.7): @​grpc/proto-loader 0.7.7 [Compare Source](https://togithub.com/grpc/grpc-node/compare/@grpc/proto-loader@0.7.6...@grpc/proto-loader@0.7.7) - Update yargs dependency to 17.x ([#​2437](https://togithub.com/grpc/grpc-node/issues/2437)) ### [`v0.7.6`](https://togithub.com/grpc/grpc-node/releases/tag/%40grpc/proto-loader%400.7.6): @​grpc/proto-loader 0.7.6 [Compare Source](https://togithub.com/grpc/grpc-node/compare/@grpc/proto-loader@0.7.5...@grpc/proto-loader@0.7.6) - Avoid importing `Long` in files that don't use it ([#​2370](https://togithub.com/grpc/grpc-node/issues/2370) contributed by [@​install](https://togithub.com/install)) ### [`v0.7.5`](https://togithub.com/grpc/grpc-node/releases/tag/%40grpc/proto-loader%400.7.5): @​grpc/proto-loader 0.7.5 [Compare Source](https://togithub.com/grpc/grpc-node/compare/@grpc/proto-loader@0.7.4...@grpc/proto-loader@0.7.5) - Include `@deprecated` annotations in generated comments if the `includeComments` option is set ([#​2357](https://togithub.com/grpc/grpc-node/issues/2357) contributed by [@​danielronnkvist](https://togithub.com/danielronnkvist)) ### [`v0.7.4`](https://togithub.com/grpc/grpc-node/releases/tag/%40grpc/proto-loader%400.7.4): @​grpc/proto-loader 0.7.4 [Compare Source](https://togithub.com/grpc/grpc-node/compare/@grpc/proto-loader@0.7.3...@grpc/proto-loader@0.7.4) - Support nominal typing with type branding ([#​2281](https://togithub.com/grpc/grpc-node/issues/2281) contributed by [@​LunaTK](https://togithub.com/LunaTK)) ### [`v0.7.3`](https://togithub.com/grpc/grpc-node/releases/tag/%40grpc/proto-loader%400.7.3): @​grpc/proto-loader 0.7.3 [Compare Source](https://togithub.com/grpc/grpc-node/compare/@grpc/proto-loader@0.7.2...@grpc/proto-loader@0.7.3) - Add message class name template options to TypeScript generator ([#​2183](https://togithub.com/grpc/grpc-node/issues/2183) contributed by [@​install](https://togithub.com/install))

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