Bump golang from 1.18 to 1.19 in /build (#168)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Luca Comellini <luca.com@gmail.com>

Author: dependabot[bot]

build/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.18 as builder
+FROM golang:1.19 as builder
 ARG VERSION
 ARG GIT_COMMIT
 ARG DATE