Add LogExpFunctions 1.0 to compat

LogExpFunctions v1.0.0's only listed breaking change is a docstring
relaxation for log2mexp, which PoissonRandom does not use. The only
LogExpFunctions API consumed here is log1pmx (src/PoissonRandom.jl:114),
whose v1.0 release added a Float32 implementation and improved accuracy
but kept the signature unchanged. Full test suite (Aqua, JET,
ExplicitImports, statistical samplers, BigFloat support,
PassthroughRNG dispatch, AllocCheck) passes against LogExpFunctions
1.0.0 on Julia 1.10, 1.11, and 1.12.

This is the same change as dependabot PR #75; opening it as a regular
PR for review.

Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>

Author: ChrisRackauckas

Project.toml

@@ -13,7 +13,7 @@ Aqua = "0.8"
 Distributions = "0.25"
 ExplicitImports = "1.14.0"
 JET = "0.9, 0.10, 0.11"
-LogExpFunctions = "0.3"
+LogExpFunctions = "0.3, 1.0"
 PrecompileTools = "1"
 Random = "1.10"
 Statistics = "1"