chore(deps): update golang version to 1.21 (#130)

renovate[bot] · web-flow · commit 5d62c6604246 · 2023-10-24T17:01:19.000+02:00
Co-authored-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
diff --git a/build/Dockerfile b/build/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20.7-bookworm
+FROM golang:1.21.3-bookworm
 
 ARG GH_VERSION='1.9.2'
 
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module github.com/newrelic/nri-mssql
 
-go 1.20
+go 1.21
 
 require (
 	github.com/denisenkom/go-mssqldb v0.12.3
