chore: add /v2 to import module path (#9072)

* chore: add /v2 to import module path

go mod requires semantic versioning with versions greater than 1.x

This was a mechanical update by running:
```
go install github.com/marwan-at-work/mod/cmd/mod@latest
mod upgrade
```

Migrate generated files to import /v2

* Fix gen

cryptorand/errors_test.go

@@ -8,7 +8,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	"github.com/coder/coder/cryptorand"
+	"github.com/coder/coder/v2/cryptorand"
 )
 
 // TestRandError checks that the code handles errors when reading from

cryptorand/numbers_test.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	"github.com/coder/coder/cryptorand"
+	"github.com/coder/coder/v2/cryptorand"
 )
 
 func TestInt63(t *testing.T) {

cryptorand/slices_test.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	"github.com/coder/coder/cryptorand"
+	"github.com/coder/coder/v2/cryptorand"
 )
 
 func TestRandomElement(t *testing.T) {

cryptorand/strings_test.go

@@ -10,7 +10,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	"github.com/coder/coder/cryptorand"
+	"github.com/coder/coder/v2/cryptorand"
 )
 
 func TestString(t *testing.T) {