dependabot npm(deps): bump @grpc/grpc-js from 1.9.0 to 1.9.1

Bumps @grpc/grpc-js from 1.9.0 to 1.9.1.

Release notes

Sourced from @​grpc/grpc-js's releases.

@​grpc/grpc-js 1.9.1

• Improve formatting of channelz logs (#2535)
• Avoid sending initial request after the deadline passes in some cases (#2536)
• Fix possible null reference in pick_first load balancing policy (#2539)
• Allow empty method config names in service configs (#2550)
• Defer actions in write callbacks on the client to potentially work around a Node bug (#2552)

Commits

• 7ca0af6 Merge pull request #2550 from murgatroid99/grpc-js_service_config_parsing
• cd25bad Merge pull request #2552 from murgatroid99/grpc-js_deferred_write_callback
• 53536d9 Merge pull request #2551 from murgatroid99/grpc-js_proto_loader_version
• 8896bfe grpc-js: Defer actions in http2 stream write callback
• f9af919 grpc-js: Update dependency on @​grpc/proto-loader
• 69257a7 grpc-js: Fix method config name handling in service configs
• 1df90db Merge pull request #2545 from murgatroid99/grpc-js_timer_types_update_1.9.x
• 1221772 grpc-js: Switch Timer type to Timeout
• 7a8d463 Merge pull request #2535 from murgatroid99/grpc-js_channelz_improvements
• 9ef4655 Merge pull request #2536 from murgatroid99/grpc-js_pick_cancel_race
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