Update dependency rxjs to v7

Author: renovate-bot

backend/package.json

@@ -43,7 +43,7 @@
     "readdirsync2": "1.0.2",
     "reflect-metadata": "0.1.13",
     "rimraf": "3.0.2",
-    "rxjs": "6.6.7",
+    "rxjs": "7.1.0",
     "simple-git": "2.38.0",
     "tmp": "0.2.1",
     "typeorm": "0.2.32",

backend/yarn.lock

@@ -5031,12 +5031,12 @@ rxjs@6.6.3, rxjs@^6.6.0:
   dependencies:
     tslib "^1.9.0"
 
-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@7.1.0:
+  version "7.1.0"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-7.1.0.tgz#94202d27b19305ef7b1a4f330277b2065df7039e"
+  integrity sha512-gCFO5iHIbRPwznl6hAYuwNFld8W4S2shtSJIqG27ReWXo9IWrCyEICxUA+6vJHwSR/OakoenC4QsDxq50tzYmw==
   dependencies:
-    tslib "^1.9.0"
+    tslib "~2.1.0"
 
 safe-buffer@5.1.2, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.2"
@@ -5789,7 +5789,7 @@ tsconfig-paths@3.9.0, tsconfig-paths@^3.9.0:
     minimist "^1.2.0"
     strip-bom "^3.0.0"
 
-tslib@2.1.0, tslib@^2.1.0:
+tslib@2.1.0, tslib@^2.1.0, tslib@~2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.1.0.tgz#da60860f1c2ecaa5703ab7d39bc05b6bf988b97a"
   integrity sha512-hcVC3wYEziELGGmEEXue7D75zbwIIVUMWAVbHItGPx0ziyXxrOMQx4rQEVEV45Ut/1IotuEvwqPopzIOkDMf0A==