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/sourcegraph/conc/.golangci.yml

@@ -0,0 +1,11 @@
+linters:
+  disable-all: true
+  enable:
+    - errcheck
+    - godot
+    - gosimple
+    - govet
+    - ineffassign
+    - staticcheck
+    - typecheck
+    - unused