Update PageBuilder version in .travis.yml

[per1234]

The /Hieromon/PageBuilder repository's 1.1.0 appears to have been deleted and the only tag now is 1.2.3. This resulted in failure of the Travis CI build:
https://travis-ci.org/per1234/AutoConnect/jobs/474724488#L731

Selected library is not available
The command "arduino --install-library PubSubClient,PageBuilder:1.1.0" failed and exited with 1 during .

Note that there is a separate issue that still causes the Travis CI build to fail even after this change:
https://travis-ci.org/per1234/AutoConnect/jobs/474727745#L751

Error: CpuFrequency: Invalid option for board "nodemcuv2"

This is caused by a breaking change in the ESP8266 core (esp8266/Arduino#5572). There is some talk of possibly reverting that change so I don't know whether you want to hold off on updating the ESP8266 FQBN until that's settled. The fix is simply to change CpuFrequency to xtal, after which the Travis CI build will pass. If you would like me to also fix that error, I'm happy to do so.

[Hieromon]

Thank you for your notification. I was aware of this serious change on the ESP8266 core. However, I have scheduled a big update for AutoConnect, and at that time I planned to modify travis.yml. To that end, I modified travis.yml of PageBuilder first, but the consistency with AutoConnect v.0.9.6 collapsed. This is my mistake.
Sorry.