updated crate to 0.47.6

[mfelsche]

The new stable release of crate is 0.47.6

[yosifkit]

Change reference: crate/docker-crate@0.47.4-2...0.47.6
LGTM

Build test of #546; 7ab7f85 (crate):

$ url="https://raw.githubusercontent.com/docker-library/official-images/7ab7f859c5341c82e775b455866dbd38a5d3a4eb/library/crate"
$ bashbrew build "$url"
Fetching crate (git://github.com/crate/docker-crate) ...
Processing crate:latest ...
Processing crate:0.46 ...
Processing crate:0.46.5 ...
Processing crate:0.47 ...
Processing crate:0.47.6 ...
$ bashbrew list "$url" | xargs test/run.sh
testing crate:latest
    'utc' [1/2]...passed
    'cve-2014--shellshock' [2/2]...passed
testing crate:0.46
    'utc' [1/2]...passed
    'cve-2014--shellshock' [2/2]...passed
testing crate:0.46.5
    'utc' [1/2]...passed
    'cve-2014--shellshock' [2/2]...passed
testing crate:0.47
    'utc' [1/2]...passed
    'cve-2014--shellshock' [2/2]...passed
testing crate:0.47.6
    'utc' [1/2]...passed
    'cve-2014--shellshock' [2/2]...passed

[mfelsche]

[tianon]

LGTM, although at some point we should probably update the # maintainer: comment to reflect who of @crate is really doing the PRs for this (or just put @crate if it's going to be a grab bag of all you guys) 👍

We could also do multiple individuals, like irssi, for example. 👍