Bump semver from 7.3.0 to 7.5.4 (#285)

Author: Nicholas-Arthur-Cook

package.json

@@ -32,7 +32,7 @@
     "launchdarkly-eventsource": "1.4.4",
     "lru-cache": "^6.0.0",
     "node-cache": "^5.1.0",
-    "semver": "^7.3.0",
+    "semver": "^7.5.4",
     "tunnel": "0.0.6",
     "uuid": "^8.3.2"
   },