golangci-lint: add custom linter settings...

...for:
  * gocritic
  * gocyclo
  * govet

.golangci.yml

@@ -45,9 +45,26 @@ linters:
     - wsl
 
 linter-settings:
+  gocritic:
+    enabled-tags:
+      - diagnostic
+      - experimental
+      - opinionated
+      - performance
+      - style
+    disabled-checks:
+      - dupImport  # https://github.com/go-critic/go-critic/issues/845
+      - ifElseChain
+      - octalLiteral
+      - whyNoLint
+      - wrapperFunc
+  gocyclo:
+    min-complexity: 15
   gofumpt:
     extra-rules: true
     lang-version: "1.18"
+  govet:
+    check-shadowing: true
   revive:
     severity: warning
     confidence: 0.8