Upgrade mocha dev-dependency from 6.2.2 to 7.1.1 (#60779)

Co-authored-by: spalger <spalger@users.noreply.github.com>

package.json

@@ -348,7 +348,7 @@
     "@types/lru-cache": "^5.1.0",
     "@types/markdown-it": "^0.0.7",
     "@types/minimatch": "^2.0.29",
-    "@types/mocha": "^5.2.7",
+    "@types/mocha": "^7.0.2",
     "@types/moment-timezone": "^0.5.12",
     "@types/mustache": "^0.8.31",
     "@types/node": ">=10.17.17 <10.20.0",
@@ -456,7 +456,7 @@
     "license-checker": "^16.0.0",
     "listr": "^0.14.1",
     "load-grunt-config": "^3.0.1",
-    "mocha": "^6.2.2",
+    "mocha": "^7.1.1",
     "mock-http-server": "1.3.0",
     "multistream": "^2.1.1",
     "murmurhash3js": "3.0.1",

x-pack/package.json

@@ -78,7 +78,7 @@
     "@types/mapbox-gl": "^0.54.1",
     "@types/memoize-one": "^4.1.0",
     "@types/mime": "^2.0.1",
-    "@types/mocha": "^5.2.7",
+    "@types/mocha": "^7.0.2",
     "@types/nock": "^10.0.3",
     "@types/node": ">=10.17.17 <10.20.0",
     "@types/node-fetch": "^2.5.0",
@@ -145,7 +145,7 @@
     "loader-utils": "^1.2.3",
     "madge": "3.4.4",
     "marge": "^1.0.1",
-    "mocha": "^6.2.2",
+    "mocha": "^7.1.1",
     "mocha-junit-reporter": "^1.23.1",
     "mochawesome": "^4.1.0",
     "mochawesome-merge": "^2.0.1",