bump go version to 1.20 (#223)

Stefano Torresi · web-flow · commit ea998a0d25e5 · 2023-05-09T18:27:35.000+02:00
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module github.com/ClusterLabs/ha_cluster_exporter
 
-go 1.17
+go 1.20
 
 require (
 	github.com/alecthomas/kingpin/v2 v2.3.2
