Upgrade otelgrpc go module to 0.46.0 (#5403)

[vinimona]

What changed?

There is a security vulnerability identified and reported in go package go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc. Refer to GHSA-8pgv-569h-w5rw for more details. This vulnerability is fixed in version 0.46.0 and this PR contains the changes to update the required go modules.

Why?

This is scanned for high vulnerability in the said package.

How did you test it?

Unit test

Potential risks

No

Is hotfix candidate?

No

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[stephanos]

Closing, as it was patched in the meantime.