Merge pull request #6018 from webpack/ci/webpack-sources-upgrade

upgrade webpack-sources in lockfile

yarn.lock

@@ -3744,7 +3744,11 @@ source-map@0.4.x, source-map@^0.4.4:
   dependencies:
     amdefine ">=0.0.4"
 
-source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.1, source-map@~0.5.3:
+source-map@^0.5.3:
+  version "0.5.7"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
+
+source-map@^0.5.6, source-map@~0.5.1:
   version "0.5.6"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.6.tgz#75ce38f52bf0733c5a7f0c118d81334a2bb5f412"
 
@@ -3760,6 +3764,10 @@ source-map@~0.2.0:
   dependencies:
     amdefine ">=0.0.4"
 
+source-map@~0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
+
 spdx-correct@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/spdx-correct/-/spdx-correct-1.0.2.tgz#4b3073d933ff51f3912f03ac5519498a4150db40"
@@ -4192,11 +4200,11 @@ webpack-dev-middleware@^1.9.0:
     range-parser "^1.0.3"
 
 webpack-sources@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/webpack-sources/-/webpack-sources-1.0.1.tgz#c7356436a4d13123be2e2426a05d1dad9cbe65cf"
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/webpack-sources/-/webpack-sources-1.1.0.tgz#a101ebae59d6507354d71d8013950a3a8b7a5a54"
   dependencies:
     source-list-map "^2.0.0"
-    source-map "~0.5.3"
+    source-map "~0.6.1"
 
 whatwg-fetch@>=0.10.0:
   version "2.0.3"