chore: harden CI and update dependencies

internal/filter/optimizations_benchmark_test.go

@@ -155,41 +155,6 @@ func BenchmarkFastStringBuilder(b *testing.B) {
 	}
 }
 
-// BenchmarkParallelProcessor benchmarks parallel processing
-func BenchmarkParallelProcessor(b *testing.B) {
-	processor := NewParallelProcessor()
-
-	// Simple processing function
-	processFn := func(input string) (string, int) {
-		// Simple transformation: uppercase
-		output := fastops.FastLower(input)
-		return output, len(input) - len(output)
-	}
-
-	sizes := []int{10, 100, 1000}
-
-	for _, size := range sizes {
-		items := make([]string, size)
-		for i := range items {
-			items[i] = makeString(100)
-		}
-
-		b.Run(fmt.Sprintf("Parallel_%d_items", size), func(b *testing.B) {
-			for i := 0; i < b.N; i++ {
-				processor.ProcessItems(items, processFn)
-			}
-		})
-
-		b.Run(fmt.Sprintf("Sequential_%d_items", size), func(b *testing.B) {
-			for i := 0; i < b.N; i++ {
-				for _, item := range items {
-					processFn(item)
-				}
-			}
-		})
-	}
-}
-
 // BenchmarkPipeline benchmarks the full pipeline
 func BenchmarkPipeline(b *testing.B) {
 	configs := []struct {