feat: PostgreSQL driver support

go.mod

@@ -15,6 +15,7 @@ require (
 	github.com/go-playground/validator/v10 v10.28.0
 	github.com/go-sql-driver/mysql v1.8.1
 	github.com/google/uuid v1.6.0
+	github.com/jackc/pgx/v5 v5.10.0
 	github.com/joho/godotenv v1.5.1
 	github.com/lestrrat-go/jwx/v2 v2.1.6
 	golang.org/x/crypto v0.57.0
@@ -22,7 +23,8 @@ require (
 	golang.org/x/net v0.59.0
 	gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
 	gorm.io/driver/mysql v1.6.0
-	gorm.io/gorm v1.31.1
+	gorm.io/driver/postgres v1.6.3
+	gorm.io/gorm v1.31.2
 )
 
 require (
@@ -50,6 +52,9 @@ require (
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
 	github.com/goccy/go-json v0.10.5 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jinzhu/now v1.1.5 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
@@ -64,6 +69,7 @@ require (
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/segmentio/asm v1.2.1 // indirect
 	golang.org/x/exp v0.0.0-20251113190631-e25ba8c21ef6 // indirect
+	golang.org/x/sync v0.23.0 // indirect
 	golang.org/x/sys v0.48.0 // indirect
 	golang.org/x/text v0.42.0 // indirect
 	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect