🚨 Update linter and fix new warnings

.golangci.yaml

@@ -1,7 +1,8 @@
+version: "2"
+
 linters:
   enable:
     - errcheck
-    - gosimple
     - govet
     - ineffassign
     - staticcheck
@@ -22,18 +23,17 @@ linters:
     - gosec
     - perfsprint
     - testifylint
-
-linters-settings:
-  testifylint:
-    enable-all: true
-    disable:
-      - require-error
-  gocognit:
-    min-complexity: 16
-  gocyclo:
-    min-complexity: 15
-  gocritic:
-    enable-all: true
-    settings:
-      hugeParam:
-        sizeThreshold: 255
+  settings:
+    testifylint:
+      enable-all: true
+      disable:
+        - require-error
+    gocognit:
+      min-complexity: 16
+    gocyclo:
+      min-complexity: 15
+    gocritic:
+      enable-all: true
+      settings:
+        hugeParam:
+          sizeThreshold: 255