Update .gitignore

Add the terraform.lock.hcl file to the gitignore

Author: RSkuma

.gitignore

@@ -18,4 +18,7 @@ backend.tfvars
 terraform.rc
 
 # Ignore metadata files
-*.tfstate.lock.info
+*.tfstate.lock.info
+
+#Ignore lock file
+*.terraform.lock.hcl