test: added lock files

Author: alexander-akait

test/lock-files/https_raw.githubusercontent.com/webpack-contrib_css-loader_master_test_fixtures_url_img_fc0003ff99956138ca55.png

@@ -0,0 +1,7 @@
+{
+  "https://raw.githubusercontent.com/webpack-contrib/css-loader/master/test/fixtures/url/img.png": {
+    "integrity": "sha512-bHqIPBYwzPsVLYcTDqJzwgvIaxLjmezufiCVXAMI0Naelf3eWVdydMA40hXbSuB0dZCGjCepuGaI7Ze8kLM+Ew==",
+    "contentType": "image/png"
+  },
+  "version": 1
+}