chore: Bump to latest build base version in Dockerfile (#75)

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Dockerfile

@@ -1,5 +1,5 @@
 ARG BCI_IMAGE=registry.suse.com/bci/bci-busybox
-ARG GO_IMAGE=rancher/hardened-build-base:v1.21.11b3
+ARG GO_IMAGE=rancher/hardened-build-base:v1.22.6b1
 ARG ARCH="amd64"
 
 # Image that provides cross compilation tooling.