Update Box2D to 2.4.2

[tpimh]

Fixes issue #2198

[tpimh]

Joint:getType() was returning distance for RopeJoint since Box2D 2.4.1 (because this is what it is now: fc2cf60).

I removed rope value completely, because it became dead code. Maybe it's possible to add some detection logic and return the correct type here:

love/src/modules/physics/box2d/Joint.cpp

Lines 67 to 68 in 5903ad8

	case e_distanceJoint:
	return JOINT_DISTANCE;

[tpimh]

Or maybe it's better to just override getType() like this tpimh@9fa0007?

[hexatorum]

the ci for windows can't find the nsis compiler and fails
but other than that error this looks fine to me, can we merge this now

[tpimh]

@hexatorum in current state, this PR removes "rope" JointType completely (it was broken since the last Box2D update). My proposed solution to restore this functionality is here: tpimh@9fa0007. If it looks good to you, I will replace the last commit in this PR with the one from that branch.