switch to golang 1.22

Signed-off-by: Markus Blaschke <[email protected]>

Author: mblaschke

Diff for: Dockerfile

@@ -1,7 +1,7 @@
 #############################################
 # Build
 #############################################
-FROM --platform=$BUILDPLATFORM golang:1.20-alpine as build
+FROM --platform=$BUILDPLATFORM golang:1.22-alpine as build
 
 RUN apk upgrade --no-cache --force
 RUN apk add --update build-base make git

Diff for: go.mod

@@ -1,6 +1,6 @@
 module github.com/webdevops/kube-pool-manager
 
-go 1.21
+go 1.22
 
 toolchain go1.22.0