Sonobuoy library v0.57.1 has wrong version in pkg/buildinfo/version.go

[mtulio]

What steps did you take and what happened:

The library version[1] mismatch from the CLI[2] in the release v0.57.1

[1]

sonobuoy/pkg/buildinfo/version.go

Lines 22 to 24 in 6f9e27f

	// Version is the current version of Sonobuoy, set by the go linker's -X flag at build time.
	// Ensure that this is bumped manually as well so that Sonobuoy, as a library, also has the right version.
	var Version = "v0.56.17"

[2]

$ wget -qO ./sonobuoy.tgz https://github.com/vmware-tanzu/sonobuoy/releases/download/v0.57.1/sonobuoy_0.57.1_linux_amd64.tar.gz; tar xvfz sonobuoy.tgz
LICENSE
sonobuoy

$ ./sonobuoy version
Sonobuoy Version: v0.57.1

What did you expect to happen:

The library version updated when new release is created.

Anything else you would like to add:

Environment:

• Sonobuoy version: v0.57.1