Bug 1773220 - Update ESLint's services list for new sessionStorage service added in bug 1757372. r=Gijs

Differential Revision: https://phabricator.services.mozilla.com/D148627

tools/lint/eslint/eslint-plugin-mozilla/lib/services.json

@@ -36,6 +36,7 @@
     "nsIQuotaManagerService": "qms",
     "nsIScriptSecurityManager": "scriptSecurityManager",
     "nsISearchService": "search",
+    "nsISessionStorageService": "sessionStorage",
     "nsISpeculativeConnect": "io",
     "nsIStringBundleService": "strings",
     "nsISystemInfo": "sysinfo",