Use go 1.22
Testing whether this fixes a build error: https://gitlab.com/gitlab-org/security-products/dependencies/trivy-db-glad/-/jobs/7250820853
(...)
go: downloading golang.org/x/mod v0.17.0
pkg/vulnsrc/amazon/amazon.go:9:2: package slices is not in GOROOT (/usr/local/go/src/slices)
make: *** [Makefile:52: build] Error 1