fix(deps): update dependency rxjs to v7

Author: renovate[bot]

package.json

@@ -32,7 +32,7 @@
   "dependencies": {
     "express": "4.17.1",
     "node-fetch": "2.6.7",
-    "rxjs": "6.6.7",
+    "rxjs": "7.8.1",
     "socket.io": "2.4.1",
     "webpack-dev-server": "3.11.2",
     "xhr2": "0.2.1"

yarn.lock

@@ -8608,12 +8608,12 @@ run-queue@^1.0.0, run-queue@^1.0.3:
   dependencies:
     aproba "^1.1.1"
 
-rxjs@6.6.7:
-  version "6.6.7"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.6.7.tgz#90ac018acabf491bf65044235d5863c4dab804c9"
-  integrity sha512-hTdwr+7yYNIT5n4AMYp85KA6yw2Va0FLa3Rguvbpa4W3I5xynaBZo41cM3XM+4Q6fRMj3sBYIR1VAmZMXYJvRQ==
+rxjs@7.8.1:
+  version "7.8.1"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-7.8.1.tgz#6f6f3d99ea8044291efd92e7c7fcf562c4057543"
+  integrity sha512-AA3TVj+0A2iuIoQkWEK/tqFjBq2j+6PO6Y0zJcvzLAFhEFIO3HL0vls9hWLncZbAAbK0mar7oZ4V079I/qPMxg==
   dependencies:
-    tslib "^1.9.0"
+    tslib "^2.1.0"
 
 rxjs@^6.4.0:
   version "6.4.0"
@@ -9895,6 +9895,11 @@ tslib@^1.8.0, tslib@^1.8.1, tslib@^1.9.0:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.3.tgz#d7e4dd79245d85428c4d7e4822a79917954ca286"
   integrity sha512-4krF8scpejhaOgqzBEcGM7yDIEfi0/8+8zDRZhNZZ2kjmHJ4hv3zCbQWxoJGz1iw5U0Jl0nma13xzHXcncMavQ==
 
+tslib@^2.1.0:
+  version "2.5.2"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.5.2.tgz#1b6f07185c881557b0ffa84b111a0106989e8338"
+  integrity sha512-5svOrSA2w3iGFDs1HibEVBGbDrAY82bFQ3HZ3ixB+88nsbsWQoKqDRb5UBYAUPEzbBn6dAp5gRNXglySbx1MlA==
+
 [email protected]:
   version "5.17.0"
   resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.17.0.tgz#f9f0ce2011d8e90debaa6e9b4975f24cd16852b8"