update gomod (#133)

Author: neufeldtech

.circleci/config.yml

@@ -5,7 +5,7 @@ version: 2
 jobs:
   build:
     docker:
-      - image: cimg/go:1.20.4
+      - image: cimg/go:1.23.10
     steps:
       - checkout
       - run: go test -v ./...

go.mod

@@ -1,7 +1,9 @@
 module github.com/neufeldtech/secretmessage-go
 
 // +heroku goVersion go1.23
-go 1.23
+go 1.23.0
+
+toolchain go1.23.10
 
 require (
 	github.com/gin-gonic/gin v1.9.1