fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE319-BUSYBOX-6913413
- https://snyk.io/vuln/SNYK-ALPINE319-BUSYBOX-6913413
- https://snyk.io/vuln/SNYK-ALPINE319-BUSYBOX-6928845
- https://snyk.io/vuln/SNYK-ALPINE319-BUSYBOX-6928846
- https://snyk.io/vuln/SNYK-ALPINE319-BUSYBOX-6928847

Dockerfile

@@ -2,7 +2,7 @@
 # build stage
 # =============================================================================
 
-FROM golang:1.22.2-alpine AS builder
+FROM golang:1.22.6-alpine AS builder
 
 WORKDIR /sdk