fix dependency on elastic extension

i had a weird error in which just installing the bundle with "friendsofsymfony/elastica-bundle":     "~3.0.2",
game me a version back even before it had a composer! :blush:
i checked and found out composer gets really confused or glitchy with packages not following semver.
In any case 1.3.0 is out, and i remove the 4th digit which i think composer ignores totally or gets confused about.