Upgrade grafana-plugin-model (#19438)

* use grafana-plugin-model dependency that uses go modules

* use grafana-plugin-model with updated hashicorp/go-plugin

* use grafana-plugin-model with re-compiled protos

* test using protoc-gen-go v1.2.0 tag

* use grafana-plugin-model with re-compiled protos

* chore: fix deprecation warning for lint

* use latest grafana-plugin-model

Fixes #19454

vendor/github.com/stretchr/testify/require/require.go.tmpl

@@ -1,6 +1,6 @@
 {{.Comment}}
 func {{.DocInfo.Name}}(t TestingT, {{.Params}}) {
-	if assert.{{.DocInfo.Name}}(t, {{.ForwardedParams}}) { return }
 	if h, ok := t.(tHelper); ok { h.Helper() }
+	if assert.{{.DocInfo.Name}}(t, {{.ForwardedParams}}) { return }
 	t.FailNow()
 }