fix: Linting

Author: erezrokah

.eslintrc

@@ -13,6 +13,12 @@
     "@typescript-eslint/no-unused-vars": 0
   },
   "overrides": [
+    {
+      "files": ["src/grpc/**/*.ts"],
+      "rules": {
+        "unicorn/no-null": 0
+      }
+    },
     {
       "files": ["*test.ts"],
       "rules": {