chore(lint): remove canonicalheader since it's not reliable

.golangci.yml

@@ -29,7 +29,6 @@ linters:
     - asciicheck
     - bidichk
     - bodyclose
-    - canonicalheader
     - containedctx
     - copyloopvar
     - decorder

internal/server/middlewares/auth/apikey.go

@@ -27,7 +27,7 @@ func (a *apiKeyMethod) equal(other authorizationChecker) bool {
 }
 
 func (a *apiKeyMethod) isAuthorized(_ http.Header, request *http.Request) bool {
-	xAPIKey := request.Header.Get("X-API-Key") //nolint:canonicalheader
+	xAPIKey := request.Header.Get("X-API-Key")
 	if xAPIKey == "" {
 		xAPIKey = request.URL.Query().Get("api_key")
 	}