Update dependency source-map-support to v0.5.20

Author: renovate-bot

package-lock.json

@@ -68,7 +68,7 @@
     "rimraf": "3.0.2",
     "sinon": "11.1.2",
     "source-map-loader": "3.0.0",
-    "source-map-support": "0.5.19",
+    "source-map-support": "0.5.20",
     "ts-loader": "8.3.0",
     "ts-node": "10.2.1",
     "tsconfig-paths": "3.11.0",