Update golang Docker tag to v1.21.6 (#21)

renovate[bot] · web-flow · commit ddb4a69be23a · 2024-01-25T20:44:39.000+01:00
Co-authored-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
diff --git a/Dockerfile b/Dockerfile
@@ -12,7 +12,7 @@
 #  http://127.0.0.1:9313/metrics
 #  http://127.0.0.1:9313/status
 
-FROM golang:1.21.1 as builder
+FROM golang:1.21.6 as builder
 
 ENV GO111MODULE=on
 
