deps: update dependencies for GORM, Viper, and SQLite support

- Add GORM v1.25.12 with MySQL and SQLite drivers
- Add Viper v1.19.0 for configuration management
- Add UUID package for GORM model IDs
- Update vendor directory with new dependencies
- Update Go module requirements and checksums

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

vendor/github.com/go-viper/mapstructure/v2/reflect_go1_20.go

@@ -0,0 +1,10 @@
+//go:build go1.20
+
+package mapstructure
+
+import "reflect"
+
+// TODO: remove once we drop support for Go <1.20
+func isComparable(v reflect.Value) bool {
+	return v.Comparable()
+}