github-ci: use go1.19.x

[anmaxvl]

No description provided.

[helsaawy]

I ran into this issue a while ago: go1.19 changes the go-doc formatting, specifically with spacing around code blocks.
Basically you need to re-run the proto generation with go 1.19

[katiewasnothere]

Is there a reason that we're moving to 1.19 and not to 1.20 since that's already out?

[anmaxvl]

Is there a reason that we're moving to 1.19 and not to 1.20 since that's already out?

I just wanted to get to a minimal version that's required for containerd to run. currently it's failing to build, which I should've probably put in the PR description.

[helsaawy]

I forgot about the other issue:
https://go.dev/doc/go1.19#os-exec-path
exec.LookPath now fails to find stuff in the local path and returns a wrapped exec.ErrDot (https://pkg.go.dev/os/exec#LookPath):

hcsshim/pkg/go-runhcs/runhcs.go

Lines 38 to 58 in dd66992

	path, err := exec.LookPath(command)
	if err != nil {
	// LookPath only finds current directory matches based on the
	// callers current directory but the caller is not likely in the
	// same directory as the containerd executables. Instead match the
	// calling binaries path (a containerd shim usually) and see if they
	// are side by side. If so execute the runhcs.exe found there.
	if self, serr := os.Executable(); serr == nil {
	testPath := filepath.Join(filepath.Dir(self), command)
	if _, serr := os.Stat(testPath); serr == nil {
	path = testPath
	}
	}
	if path == "" {
	// Failed to look up command just use it directly and let the
	// Windows loader find it.
	path = command
	}
	runhcsPath.Store(path)
	return path
	}