Switch to pure-Go SQLite driver for cross-compilation

- Replace mattn/go-sqlite3 with modernc.org/sqlite (pure-Go, no CGO required)
- Update GoReleaser config to disable CGO for ARM64 builds
- Change driver name from 'sqlite3' to 'sqlite' in all sql.Open calls
- Enables successful cross-compilation for ARM64 without cross-compiler toolchain
- All tests passing with new driver

internal/infrastructure/http/integration_test.go

@@ -15,7 +15,7 @@ import (
 	"apocapoc-api/internal/infrastructure/crypto"
 	"apocapoc-api/internal/infrastructure/persistence/sqlite"
 
-	_ "github.com/mattn/go-sqlite3"
+	_ "modernc.org/sqlite"
 )
 
 type TestServer struct {
@@ -24,7 +24,7 @@ type TestServer struct {
 }
 
 func setupTestServer(t *testing.T) *TestServer {
-	db, err := sql.Open("sqlite3", ":memory:")
+	db, err := sql.Open("sqlite", ":memory:")
 	if err != nil {
 		t.Fatalf("Failed to open test database: %v", err)
 	}