Update comby/comby Docker tag to v1.0.0

Created by: rvantonder

Looks like renovate didn't pick this up, maybe because I bumped the major version. The major version changes some matching behavior so that it's technically a breaking change (see note), but in practice it is very unlikely to affect historic queries. The whole reason for the change is that it makes previously problematic queries reasonable now. For example, previously a query like :[x] = :[y] meant that x and y could match across multiple lines (so y would match until EOF). This wasn't practical. The change makes it so that y would at most match until end of line when it is not within block syntax.

TODO: changelog entry for change in behavior.