Remove argon2id, use bcrypt-only password hashing

.gitea/workflows/ci.yaml

@@ -34,8 +34,6 @@ jobs:
           export DATABASE_URL="mysql://test:test@localhost:3306/test?charset=utf8mb4"
           export AUTH_SECRET="ci-test-secret-key-that-is-long-enough"
           export REDIS_URL="redis://127.0.0.1:6379?connect_timeout=1"
-          export ARGON2_MEMORY_SIZE=1024
-          export ARGON2_ITERATIONS=1
           export BCRYPT_ROUNDS=4
           pnpm install --frozen-lockfile
           pnpm prisma:generate