Bump atinject to 1.2
Bump atinject to 1.2

This realigns the version with pax-web, so that exam and web can be used
together out of the box with an empty mvn repo.

Signed-off-by: Robert Varga <91ae5aa8c7a9f7e57b701db766e23e544aaa6ae9@pantheon.tech>

ops4j/org.ops4j.pax.exam2,ops4j/org.ops4j.pax.exam2