fix(deps): update dependency @grpc/proto-loader to ^0.6.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@grpc/proto-loader (source)	^0.5.0 -> ^0.6.0

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Release Notes

grpc/grpc-node

v0.6.4

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• Fix a bug that caused some imports to be incorrectly omitted in generated code (#​1832 contributed by @​mtlewis)

v0.6.3

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• Remove unused imports in the generated code (#​1826 contributed by @​mtlewis, @​install, and @​joeporpeglia)

v0.6.2

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• Fix auto-generated service definition (#​1778 contributed by @​EduardoLaranjo)

v0.6.1

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• Generate TypeScript types showing that unset message field values can be null instead of undefined in some cases (#​1744)
• Generate more detailed TypeScript types for service definition objects (#​1745)

v0.6.0

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• Add a generator for TypeScript types for the objects created by this library (#​1474)
• Add fromJSON method for loading types represented as JSON objects (#​1713 contributed by @​SOVLOOKUP)

v0.5.6

• Add functions for loading and parsing binary-encoded or plain object file descriptor sets (#​1635 contributed by @​tatemz)

v0.5.4

@​grpc/proto-loader 0.5.3

• Don't cache descriptor data from loaded .proto files (#​1156)

@​grpc/proto-loader 0.5.4

• Warn when a file in an import list cannot be found (#​1299)

v0.5.3

• Improve server-related type definitions (#​972)
• Report network connection drops with UNAVAILABLE status instead of INTERNAL (#​1021).

v0.5.2

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• Fix a TypeError loading a non-existent proto file. (#​877 contributed by @​the9000)

v0.5.1

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• Accept arrays of filenames in load and loadSync (#​806 contributed by @​jroper)

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