make latest Tasmota release always available to build

[bam80]

tasmocompiler/server/config/config.js

Line 7 in 26ebd63

const maxVersion = 'v13.1.0';

this needs to be bumped every now and then,
could we make latest release always available persistently?

Otherwise, issues like that are to be opened:
#381

[Noschvie]

Explained comment #362