fix compilation warning

[rvbc1]

Small change for fix compilation warning on esp32 with arduino 3.0.X with -std=gnu++20 flag

.pio/libdeps/SparkFun WM8960 Arduino Library/src/SparkFun_WM8960_Arduino_Library.cpp: In member function 'boolean WM8960::enableAlc(uint8_t)':
.pio/libdeps/SparkFun WM8960 Arduino Library/src/SparkFun_WM8960_Arduino_Library.cpp:552:28: warning: 'B00000001' is deprecated: use 0b00000001 instead [-Wdeprecated-declarations]
  552 |     boolean bit7 = (mode & B00000001);
      |                            ^~~~~~~~~

[lewispg228]

@rvbc1 Thanks for this PR. Just verified on my setup and the warning is gone. Thanks!

PS just for clarity, in case anyone comes across this later, these are the SW versions that have been verified:

Arduino IDE: 2.3.2
Esp32 Boards Package: 3.0.3