modernize the codebase

Run the modernize linter across the codebase.
Change generated by running:

```
go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix -test ./...
```

Ref:
https://pkg.go.dev/golang.org/x/tools/gopls/internal/analysis/modernize

cmd/CatsOfMastodonBotGo/main.go

@@ -23,18 +23,18 @@ func main() {
 
 			// Configuration
 			config.Load,
-			
+
 			// Database
 			database.Connect,
-			
+
 			// Services
 			services.NewPostService,
 			services.NewImgKitHelper,
-			
+
 			// Auth
 			auth.NewJwtTokenGenerator,
 			auth.NewGiteaOauth2Token,
-			
+
 			// Handlers
 			handlers.NewAdminDashboardHandler,
 			handlers.NewApiEndpointHandler,
@@ -44,7 +44,7 @@ func main() {
 		fx.Invoke(
 			// Start background tasks
 			startBackgroundTasks,
-			
+
 			// Setup and start server
 			server.SetupRouter,
 		),
@@ -62,49 +62,49 @@ func startBackgroundTasks(
 	lc.Append(fx.Hook{
 		OnStart: func(context.Context) error {
 			ticker := time.NewTicker(10 * time.Minute)
-			
+
 			runFetchPosts := func() {
 				ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
 				defer cancel()
-				
+
 				posts, err := postService.GetPostsFromApi(ctx, cfg.Tag, cfg.Instance)
 				if err != nil {
 					logger.Error("Failed to fetch posts", zap.Error(err))
 					return
 				}
-				
+
 				existingPostIds := postService.GetExistingPostIds()
 				existingAccountIds := postService.GetExistingAccountIds()
 				newPosts := postService.GetNewPosts(existingPostIds, posts)
 				newAccounts := postService.GetNewAccounts(existingAccountIds, newPosts)
-				
+
 				logger.Info("Fetched posts",
 					zap.Int("total", len(posts)),
 					zap.Int("existing", len(existingPostIds)),
 					zap.Int("new", len(newPosts)),
 					zap.Int("new_accounts", len(newAccounts)))
-				
+
 				if len(newAccounts) > 0 {
 					count := postService.InsertNewAccounts(newAccounts)
 					logger.Info("Inserted accounts", zap.Int("count", count))
 				}
-				
+
 				if len(newPosts) > 0 {
 					count := postService.InsertNewPosts(newPosts)
 					logger.Info("Inserted posts", zap.Int("count", count))
 				}
 			}
-			
+
 			// Run initial fetch
 			go runFetchPosts()
-			
+
 			// Start ticker
 			go func() {
 				for range ticker.C {
 					runFetchPosts()
 				}
 			}()
-			
+
 			return nil
 		},
 		OnStop: func(context.Context) error {
@@ -129,6 +129,6 @@ func NewFXLogger() *FXLogger {
 	return &FXLogger{logger: logger}
 }
 
-func (l *FXLogger) Printf(str string, args ...interface{}) {
+func (l *FXLogger) Printf(str string, args ...any) {
 	l.logger.Sugar().Infof(str, args...)
-}
+}