Release firtool-1.86.0 · llvm/circt

What's Changed

[FIRRTL][FIRParser] Check force source more. by @dtzSiFive in #7574
Make sure type conversion materialization callbacks return values of the correct type by @maerhart in #7583
Bump LLVM by @maerhart in #7572
[python] Add walk_with_filter to walk subset of IR by @uenoku in #7591
[FIRRTL][GrandCentral] Remove legacy Augmented types. by @dtzSiFive in #7592
[python] Fix clang-tidy warnings in walk_with_filter, NFC by @uenoku in #7594
[FIRRTL] Convert LowerMemory to walk by @seldridge in #7596
LLVM Bump by @maerhart in #7595
[FIRRTL] Change InferReadWrite to use a walk, error if it sees WhenOps by @seldridge in #7597

Full Changelog: firtool-1.85.0...firtool-1.86.0