Upgrade to beberlei/assert 2.x

[broadway]

Upgrade to beberlei/assert 2.x

[stof]

This should be a matter of changing the constraint. The only BC break is the signature of the exception constructor, and you never throw it directly, you rely on the library to do it

[wjzijderveld]

We do over here atm: https://github.com/qandidate-labs/broadway/blob/54b34320b7d8866e816c0b24cc528f4efb704309/src/Broadway/EventSourcing/EventSourcingRepository.php#L105
So not a big deal, but still need to be done :)

[stof]

update to 2.x, and use the assertion available to perform the check: https://github.com/beberlei/assert/blob/c2aa764604f608498a87e51193ffa9c49583d205/lib/Assert/Assertion.php#L896

[asm89]

@stof we also have to do testing on our internal projects that also use other features of beberlei/assert.