test: fix test password hash to use Go-generated bcrypt

Changed login test password from 'Test@Pass123!' to 'testpass123' and updated
bcrypt hash to use Go's golang.org/x/crypto/bcrypt library instead of Python's bcrypt.

cmd/server/tests/test_helpers.go

@@ -240,7 +240,7 @@ func getTestUserID(t *testing.T, db *database.Queries) uuid.UUID {
 	// If user doesn't exist, create one with a valid password
 	// Password: "Test@Pass123!" meets complexity requirements
 	// This is the bcrypt hash for "Test@Pass123!"
-	passwordHash := "$2a$10$vYI7j2zvH3vBmGHXqKbqMe.8hKqJVYOvQKHh8fPJWGjVPKpXzGvMqG"
+	passwordHash := "$2a$10$JjAtK7PPa1WexQC3AUGe8OXLeuseZ/haN1Mz7emMo6CfOvMiTVXWq"
 
 	newUser, err := db.CreateUser(context.Background(), database.CreateUserParams{
 		Email:        "testuser@example.com",