The problem

If your intel sound card does not work after updating Linux kernel you can revert back the kernel.

In my case, the sound card stopped working after installation the kernel linux-image-5.3.0-7642-generic

These steps can help you to revert back the kernel

0) check your current kernel version

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uname -a

1) check the list of available kernels

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ls /boot

So, my previous kernel is linux-image-5.3.0-7625-generic

2) let’s revert back the previous kernel

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sudo kernelstub -v -o "quiet loglevel=0 systemd.show_status=false splash" -k /boot/vmlinuz-5.3.0-7625-generic -i /boot/initrd.img-5.3.0-7625-generic

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sudo reboot

3) chek your kernel version again

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uname -a

It should be your previous kernel.
After that, the sound card should work.

I hope this problem will be fixed in the next kernel version.