MM-43753: Go mod tidy for 1.18 (#20073)

We bump the go.mod version to 1.18
and run go mod tidy.

This is required for using new features.

```release-note
NONE
```

vendor/github.com/mailru/easyjson/go.mod

@@ -1,5 +0,0 @@
-module github.com/mailru/easyjson
-
-go 1.12
-
-require github.com/josharian/intern v1.0.0

vendor/github.com/mailru/easyjson/go.sum

@@ -1,2 +0,0 @@
-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=