Post-review fixes

Author: alwx

.github/workflows/buildandtest.yml

@@ -123,7 +123,7 @@ jobs:
         run: yarn install
       - name: Check lock file integrity
         run: |
-          ["$(diff yarn.lock.initial yarn.lock)" -eq ""]
+          [ "$(diff yarn.lock.initial yarn.lock)" = "" ]
 
   job_build:
     name: Build

.swiftlint.yml

@@ -56,7 +56,7 @@ only_rules:
   - private_unit_test
   - prohibited_super_call
   - redundant_nil_coalescing
-  - implicit_optional_initialization
+  - redundant_optional_initialization
   - redundant_string_enum_value
   - redundant_void_return
   - return_arrow_whitespace