Added missing requirements for Ubuntu 22.04 LTS

[0rShemesh]

I've installed unblob on my new machine and figure out that some dependencies are not already installed when i try to use unblob to open some firmwares.
so i just added lz4 to the requirements

after install unblob:

oru@oru:~$ unblob --show-external-dependencies
The following executables found installed, which are needed by unblob:
    7z                          ✓
    debugfs                     ✓
    jefferson                   ✓
    lz4                         ✗
    lziprecover                 ✓
    lzop                        ✓
    sasquatch                   ✓
    sasquatch-v4be              ✓
    simg2img                    ✓
    ubireader_extract_files     ✓
    ubireader_extract_images    ✓
    unar                        ✓
    zstd                        ✓

after adding lz4 to the requirements:

oru@oru:~$ sudo apt install -y lz4 > /dev/null

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

oru@oru:~$ unblob --show-external-dependencies
The following executables found installed, which are needed by unblob:
    7z                          ✓
    debugfs                     ✓
    jefferson                   ✓
    lz4                         ✓
    lziprecover                 ✓
    lzop                        ✓
    sasquatch                   ✓
    sasquatch-v4be              ✓
    simg2img                    ✓
    ubireader_extract_files     ✓
    ubireader_extract_images    ✓
    unar                        ✓
    zstd                        ✓
oru@oru:~$

[martonilles]

@0rShemesh thanks for your contribution! :)

[0rShemesh]

@0rShemesh thanks for your contribution! :)

For sure
Hope to contribute more in the future