chore(testutil): add testutil.GoleakOptions (#16070)

- Adds `testutil.GoleakOptions` and consolidates existing options to
this location
- Pre-emptively adds required ignore for this Dependabot PR to pass CI
https://github.com/coder/coder/pull/16066

coderd/database/dbpurge/dbpurge_test.go

@@ -34,7 +34,7 @@ import (
 )
 
 func TestMain(m *testing.M) {
-	goleak.VerifyTestMain(m)
+	goleak.VerifyTestMain(m, testutil.GoleakOptions...)
 }
 
 // Ensures no goroutines leak.

coderd/database/dbrollup/dbrollup_test.go

@@ -23,7 +23,7 @@ import (
 )
 
 func TestMain(m *testing.M) {
-	goleak.VerifyTestMain(m)
+	goleak.VerifyTestMain(m, testutil.GoleakOptions...)
 }
 
 func TestRollup_Close(t *testing.T) {

coderd/database/dbtestutil/postgres_test.go

@@ -12,10 +12,11 @@ import (
 
 	"github.com/coder/coder/v2/coderd/database/dbtestutil"
 	"github.com/coder/coder/v2/coderd/database/migrations"
+	"github.com/coder/coder/v2/testutil"
 )
 
 func TestMain(m *testing.M) {
-	goleak.VerifyTestMain(m)
+	goleak.VerifyTestMain(m, testutil.GoleakOptions...)
 }
 
 func TestOpen(t *testing.T) {

coderd/database/migrations/migrate_test.go

@@ -28,7 +28,7 @@ import (
 )
 
 func TestMain(m *testing.M) {
-	goleak.VerifyTestMain(m)
+	goleak.VerifyTestMain(m, testutil.GoleakOptions...)
 }
 
 func TestMigrate(t *testing.T) {