chore(go): go-openapi requires go.1.20 across the board

Signed-off-by: Frederic BIDON <fredbi@yahoo.com>

go.mod

@@ -1,7 +1,7 @@
 module github.com/go-openapi/jsonpointer
 
 require (
-	github.com/go-openapi/swag v0.22.10
+	github.com/go-openapi/swag v0.23.0
 	github.com/stretchr/testify v1.9.0
 )
 
@@ -14,4 +14,4 @@ require (
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
-go 1.19
+go 1.20

go.sum

@@ -1,8 +1,8 @@
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/go-openapi/swag v0.22.10 h1:4y86NVn7Z2yYd6pfS4Z+Nyh3aAUL3Nul+LMbhFKy0gA=
-github.com/go-openapi/swag v0.22.10/go.mod h1:Cnn8BYtRlx6BNE3DPN86f/xkapGIcLWzh3CLEb4C1jI=
+github.com/go-openapi/swag v0.23.0 h1:vsEVJDUo2hPJ2tu0/Xc+4noaxyEffXNIs3cOULZ+GrE=
+github.com/go-openapi/swag v0.23.0/go.mod h1:esZ8ITTYEsH1V2trKHjAN8Ai7xHb8RV+YSZ577vPjgQ=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=