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

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

go.mod

@@ -1,9 +1,9 @@
 module github.com/go-openapi/spec
 
 require (
-	github.com/go-openapi/jsonpointer v0.20.3
-	github.com/go-openapi/jsonreference v0.20.5
-	github.com/go-openapi/swag v0.22.10
+	github.com/go-openapi/jsonpointer v0.21.0
+	github.com/go-openapi/jsonreference v0.21.0
+	github.com/go-openapi/swag v0.23.0
 	github.com/stretchr/testify v1.9.0
 	gopkg.in/yaml.v3 v3.0.1
 )
@@ -15,4 +15,4 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 )
 
-go 1.19
+go 1.20

go.sum

@@ -1,11 +1,11 @@
 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/jsonpointer v0.20.3 h1:jykzYWS/kyGtsHfRt6aV8JTB9pcQAXPIA7qlZ5aRlyk=
-github.com/go-openapi/jsonpointer v0.20.3/go.mod h1:c7l0rjoouAuIxCm8v/JWKRgMjDG/+/7UBWsXMrv6PsM=
-github.com/go-openapi/jsonreference v0.20.5 h1:hutI+cQI+HbSQaIGSfsBsYI0pHk+CATf8Fk5gCSj0yI=
-github.com/go-openapi/jsonreference v0.20.5/go.mod h1:thAqAp31UABtI+FQGKAQfmv7DbFpKNUlva2UPCxKu2Y=
-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/jsonpointer v0.21.0 h1:YgdVicSA9vH5RiHs9TZW5oyafXZFc6+2Vc1rr/O9oNQ=
+github.com/go-openapi/jsonpointer v0.21.0/go.mod h1:IUyH9l/+uyhIYQ/PXVA41Rexl+kOkAPDdXEYns6fzUY=
+github.com/go-openapi/jsonreference v0.21.0 h1:Rs+Y7hSXT83Jacb7kFyjn4ijOuVGSvOdF2+tg1TRrwQ=
+github.com/go-openapi/jsonreference v0.21.0/go.mod h1:LmZmgsrTkVg9LG4EaHeY8cBDslNPMo06cago5JNLkm4=
+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=