Chore(deps): Bump google.golang.org/grpc from 1.62.1 to 1.63.0

[dependabot[bot]]

Bumps google.golang.org/grpc from 1.62.1 to 1.63.0.

Release notes

Sourced from google.golang.org/grpc's releases.

Release 1.63.0

Behavior Changes

• grpc: Return canonical target string from resolver.Address.String() (experimental) (#6923)
• client & server: when using write buffer pooling, use input value for buffer size instead of size*2 (#6983)
  • Special Thanks: @​raghav-stripe

New Features

• grpc: add ClientConn.CanonicalTarget() to return the canonical target string. (#7006)
• xds: implement LRS named metrics support (gRFC A64) (#7027)
  • Special Thanks: @​danielzhaotongliu
• grpc: introduce grpc.NewClient to allow users to create new clients in idle mode and with "dns" as the default resolver (#7010)
  • Special Thanks: @​bruuuuuuuce

API Changes

• grpc: stabilize experimental method ClientConn.Target() (#7006)

Bug Fixes

• xds: fix an issue that would cause the client to send an empty list of resources for LDS/CDS upon reconnecting with the management server (#7026)
• server: Fix some errors returned by a server when using a grpc.Server as an http.Handler with the Go stdlib HTTP server (#6989)
• resolver/dns: add SetResolvingTimeout to allow configuring the DNS resolver's global timeout (#6917)
  • Special Thanks: @​and1truong
• Set the security level of Windows named pipes to NoSecurity (#6956)
  • Special Thanks: @​irsl

Release 1.62.2

Dependencies

• Update http2 library to address vulnerability CVE-2023-45288

Commits

• c68f456 Change version to 1.63.0 (#7050)
• 6369167 *: update http2 dependency (#7082)
• 8854761 cherry-pick: channelz: fix race accessing channelMap without lock (#7079) (#7...
• e62770d channelz: add LocalAddr to listen sockets and test (#7062) (#7063)
• 4ffccf1 googlec2p: use xdstp style template for client LDS resource name (#7048)
• faf9964 gracefulswitch: add ParseConfig and make UpdateClientConnState call SwitchTo ...
• 800a8e0 channelz: re-add state for subchannels (#7046)
• dadbbfa channelz: re-add target and state (#7042)
• 55cd7a6 channelz: major cleanup / reorganization (#6969)
• a1033b1 xds: add LRS named metrics support (#7027)
• Additional commits viewable in compare view

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[ka3de]

grpc.Dial and grpc.DialContext are deprecated, although they will be supported throughout v1.x.x.

We use this to dial the API gRPC server during the agent initialization. The suggested way to do this is to replace this: https://github.com/grafana/synthetic-monitoring-agent/blob/83f8603977c4785e611fa381a14eea933b80826b/cmd/synthetic-monitoring-agent/grpc.go#L43 With something such as:

return grpc.NewClient(addr, opts...)

Or:

con, err := grpc.NewClient(addr, opts...)
if err != nil {
    return nil, fmt.Errorf("building client: %w", err)
}
con.Connect() // Although this does not block waiting for conn, and therefore never returns error
return con, nil

But this modifies our current behavior where we block and force the connection with the API before returning from the dialAPIServer function. This seems to be an anti pattern and we should just expect the connection to be established during the first rpc call, and be able to handle connection errors as a result of that call, which I believe we already do. So, we can probably remove the blocking behavior from main and just expect the first gRPC service call to connect, because the agent will try to fetch data from the API when starting, that will happen early when initializing also, but I'm keeping this PR open by now to review this better.

[dependabot[bot]]

Superseded by #678.