chore: update golangci-lint config file to v2

.golangci.yaml

@@ -1,17 +1,18 @@
+version: "2"
 linters:
-  disable-all: true
+  default: none
   enable:
-    - gofumpt
     - staticcheck
     - govet
-    - gci
 
-linters-settings:
+formatters:
-  gci:
+  enable:
-    custom-order: true
+    - gofumpt
-    sections:
+    - gci
-      - standard
+  settings:
-      - prefix(github.com/metacubex/mihomo)
+    gci:
-      - default
+      custom-order: true
-  staticcheck:
+      sections:
-    go: '1.19'
+        - standard
+        - prefix(github.com/metacubex/mihomo)
+        - default