fix golangci for go 1.18

cw-sakamoto · cw-sakamoto · commit 73d2b0f6b952 · 2022-05-30T09:58:22.000+09:00
diff --git a/.golangci.yml b/.golangci.yml
@@ -6,7 +6,7 @@ linters-settings:
 
 run:
   deadline: 1m
-  go: '1.15'
+  go: '1.18'
 
 issues:
   exclude:
