update go to 1.18.0

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

dockerfiles/Dockerfile.dev

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.17.8
+ARG GO_VERSION=1.18.0
 
 ARG BUILDX_VERSION=0.7.1
 FROM docker/buildx-bin:${BUILDX_VERSION} AS buildx

dockerfiles/Dockerfile.lint

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.17.8
+ARG GO_VERSION=1.18.0
 ARG GOLANGCI_LINT_VERSION=v1.45.2
 
 FROM golangci/golangci-lint:${GOLANGCI_LINT_VERSION}-alpine AS golangci-lint

dockerfiles/Dockerfile.vendor

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.17.8
+ARG GO_VERSION=1.18.0
 ARG MODOUTDATED_VERSION=v0.8.0
 
 FROM golang:${GO_VERSION}-alpine AS base