Add pnpm-lock.yml to talismanrc (#443)

* Add pnpm.lock to talismanrc test

* Add pnpm.lock to the node scope

* Fix pnpm lockfile name

---------

Co-authored-by: Dougal Graham <dougal.graham@thoughtworks.com>

talismanrc/scopes.go

@@ -1,7 +1,7 @@
 package talismanrc
 
 var knownScopes = map[string][]string{
-	"node":      {"yarn.lock", "package-lock.json", "node_modules/"},
+	"node":      {"pnpm-lock.yaml", "yarn.lock", "package-lock.json", "node_modules/"},
 	"go":        {"makefile", "go.mod", "go.sum", "Gopkg.toml", "Gopkg.lock", "glide.yaml", "glide.lock"},
 	"images":    {"*.jpeg", "*.jpg", "*.png", "*.tiff", "*.bmp"},
 	"bazel":     {"*.bzl"},

talismanrc/talismanrc_test.go

@@ -90,6 +90,7 @@ func TestIgnoreAdditionsByScope(t *testing.T) {
 	testTable := map[string][]gitrepo.Addition{
 		"node": {
 			testAddition("yarn.lock"),
+			testAddition("pnpm-lock.yaml"),
 			testAddition("package-lock.json"),
 			testAddition("node_modules/module1/foo.js")},
 		"go": {