Deprecate PHP 5 on README.md

Merge pull request phalcon#13310 from phalcon/3.3.x

3.3.2

Regenerated build (PHP7) [ci skip]

Merge pull request phalcon#13232 from phalcon/3.3.x

3.3.0

Merge pull request phalcon#13129 from phalcon/3.2.x

3.2.4

Merge pull request phalcon#13116 from phalcon/3.2.x

3.2.3

Update change log [ci skip]

Updatet the CHANGELOG.md [ci skip]

Updated CHANGELOG.md [ci skip]

Merge pull request phalcon#12765 from phalcon/3.1.x

3.1.2