Rebuild citadel bottles for protobuf 25

[scpeters]

Part of #2483.

Pull request commits created with the following command:

for f in $(grep -L '^ *bottle do' $(grep -rnI depend.*ignition ignition-citadel.rb | sed -e 's@.* "@@' -e 's@"@.rb@'))
do
    brew bump-revision --message="rebuild bottle" $f
done

[scpeters]

build bottle