Exclude .go files from dh_strip since otherwise it will fail the build

make[1]: Leaving directory '/<<PKGBUILDDIR>>'
   dh_strip
strip: Unable to recognise the format of the input file
`debian/aisleriot/usr/lib/x86_64-linux-gnu/aisleriot/guile/2.2/quatorze.go'
dh_strip: strip --remove-section=.comment --remove-section=.note
--strip-unneeded
debian/aisleriot/usr/lib/x86_64-linux-gnu/aisleriot/guile/2.2/quatorze.go
returned exit code 1
dh_strip: Aborting due to earlier error