Bump webpack from 5.0.0-beta.14 to 5.0.0-beta.15

Bumps [webpack](https://github.com/webpack/webpack) from 5.0.0-beta.14 to 5.0.0-beta.15.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v5.0.0-beta.14...v5.0.0-beta.15)
Signed-off-by: Ndependabot-preview[bot] <support@dependabot.com>

package.json

@@ -50,7 +50,7 @@
     "typescript": "^3.8.3",
     "url-loader": "^3.0.0",
     "val-loader": "2.1.1",
-    "webpack": "^5.0.0-beta.14",
+    "webpack": "^5.0.0-beta.15",
     "webpack-cli": "^3.3.10",
     "yaml-loader": "0.6.0"
   },

yarn.lock

@@ -7419,10 +7419,10 @@ webpack-sources@^1.4.3:
     source-list-map "^2.0.0"
     source-map "~0.6.1"
 
-webpack@^5.0.0-beta.14:
-  version "5.0.0-beta.14"
-  resolved "https://registry.yarnpkg.com/webpack/-/webpack-5.0.0-beta.14.tgz#f30851bcb12920be6c225dce5e5da93d2de6f68a"
-  integrity sha512-g51iJZx/7geKuqRhBR2KK2EpnfwwkO+mw/MsxfnUoXTCptoC4XPUXYLue1VjEMOnHfTyk9xnxrTwnW14pclMQw==
+webpack@^5.0.0-beta.15:
+  version "5.0.0-beta.15"
+  resolved "https://registry.yarnpkg.com/webpack/-/webpack-5.0.0-beta.15.tgz#bd44de61ed6018e554afbabdb5b644cae86357cb"
+  integrity sha512-nT+l7LteKTIzB3lmroEGL4qcCBqgHMpa3EJUvhQdfXRWjxCfWnnWdBARhp/To61omZhyNPz2Ye2J1ZEf070kWA==
   dependencies:
     "@webassemblyjs/ast" "1.9.0"
     "@webassemblyjs/helper-module-context" "1.9.0"