Update dependency @types/express to v4.17.4 (#352)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package.json

@@ -23,7 +23,7 @@
     "@sourcegraph/prettierrc": "^3.0.3",
     "@sourcegraph/tsconfig": "^4.0.1",
     "@sourcegraph/tslint-config": "^13.4.0",
-    "@types/express": "4.17.3",
+    "@types/express": "4.17.4",
     "@types/got": "9.6.9",
     "@types/highlight.js": "9.12.3",
     "@types/ini": "1.3.30",

yarn.lock

@@ -952,13 +952,14 @@
     "@types/node" "*"
     "@types/range-parser" "*"
 
-"@types/express@4.17.3":
-  version "4.17.3"
-  resolved "https://registry.npmjs.org/@types/express/-/express-4.17.3.tgz#38e4458ce2067873b09a73908df488870c303bd9"
-  integrity sha512-I8cGRJj3pyOLs/HndoP+25vOqhqWkAZsWMEmq1qXy/b/M3ppufecUwaK2/TVDVxcV61/iSdhykUjQQ2DLSrTdg==
+"@types/express@4.17.4":
+  version "4.17.4"
+  resolved "https://registry.npmjs.org/@types/express/-/express-4.17.4.tgz#e78bf09f3f530889575f4da8a94cd45384520aac"
+  integrity sha512-DO1L53rGqIDUEvOjJKmbMEQ5Z+BM2cIEPy/eV3En+s166Gz+FeuzRerxcab757u/U4v4XF4RYrZPmqKa+aY/2w==
   dependencies:
     "@types/body-parser" "*"
     "@types/express-serve-static-core" "*"
+    "@types/qs" "*"
     "@types/serve-static" "*"
 
 "@types/glob@*":
@@ -1087,6 +1088,11 @@
   resolved "https://registry.npmjs.org/@types/q/-/q-1.5.2.tgz#690a1475b84f2a884fd07cd797c00f5f31356ea8"
   integrity sha512-ce5d3q03Ex0sy4R14722Rmt6MT07Ua+k4FwDfdcToYJcMKNtRVQvJ6JCAPdAmAnbRb6CsX6aYb9m96NGod9uTw==
 
+"@types/qs@*":
+  version "6.9.1"
+  resolved "https://registry.npmjs.org/@types/qs/-/qs-6.9.1.tgz#937fab3194766256ee09fcd40b781740758617e7"
+  integrity sha512-lhbQXx9HKZAPgBkISrBcmAcMpZsmpe/Cd/hY7LGZS5OfkySUBItnPZHgQPssWYUET8elF+yCFBbP1Q0RZPTdaw==
+
 "@types/range-parser@*":
   version "1.2.3"
   resolved "https://registry.npmjs.org/@types/range-parser/-/range-parser-1.2.3.tgz#7ee330ba7caafb98090bece86a5ee44115904c2c"