Update Base64LineBreaker fuzzing tests in b64linebreaker_test.go

Updated the fuzzing tests in the `Base64LineBreaker_Write` function. The change specifically converts integer bytes from decimal to octal. This ensures proper testing of a wider range of input scenarios, increasing the reliability and robustness of the code.

b64linebreaker_test.go

@@ -466,7 +466,7 @@ func (e errorWriter) Close() error {
 func FuzzBase64LineBreaker_Write(f *testing.F) {
  f.Add([]byte("abc"))
  f.Add([]byte("def"))
- f.Add([]uint8{00, 01, 02, 30, 255})
+ f.Add([]uint8{0o0, 0o1, 0o2, 30, 255})
  buf := bytes.Buffer{}
  bw := bufio.NewWriter(&buf)
  f.Fuzz(func(t *testing.T, data []byte) {