Require Go 1.15 instead of 1.16

jimsmart · jimsmart · commit 5910ef87f839 · 2021-06-21T19:09:29.000+01:00
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module github.com/jimsmart/progszy
 
-go 1.16
+go 1.15
 
 require (
 	github.com/elazarl/goproxy v0.0.0-20200315184450-1f3cb6622dad // indirect
