watch: update to hold 2 digit version numbers

Author: merge

debian/watch

@@ -1,3 +1,3 @@
 version=3
 opts=pgpsigurlmangle=s/$/.asc/ \
-https://github.com/kergoth/tslib/releases .*/tslib-(\d\.\d)\.tar\.(?:bz2|gz|xz)
+https://github.com/kergoth/tslib/releases .*/tslib-(\d\.\d\d)\.tar\.(?:bz2|gz|xz)