Fix linter file schema verification

Author: Lorenz Kästle

.golangci.yml

@@ -1,24 +1,25 @@
 run:
   timeout: 5m
   tests: false
-  skip-files:
+
+issues:
+  exclude-files:
     - 'internal/config/http_config.go'
     - 'internal/config/config.go'
+
 linters:
    enable-all: true
    disable:
      - cyclop
      - depguard
-     - exhaustivestruct
      - exhaustruct
      - forbidigo
      - gci
      - gochecknoglobals
      - gochecknoinits
      - godox
-     - goerr113
+     - err113
      - gofumpt
-     - gomnd
      - mnd
      - lll
      - musttag
@@ -29,8 +30,3 @@ linters:
      - tagliatelle
      - varnamelen
      - wrapcheck
-linters-settings:
-   estif:
-     min-complexity: 4
-   maligned:
-     suggest-new: true