Fix Issue 2419 (#2438)

Removed seemingly unnecessary capturing group and non-numeric version
tag in Google Analytics pattern to prevent falsely reporting "analytics"
or "Universal Analytics" as a version identifier.

I understand that there are `classic` (deprecated) and `universal`
flavors offered (at some point) by Google so if you want this split into
two different patterns let me know and I can tackle that too. However,
with this not being what the majority in the IT industry would classify
as a "version" identifier I figured this was a safe way to go.

Fixes AliasIO/Wappalyzer#2419