Bump Chisel along 3.4.x release branch

[jackkoenig]

Summary of changes

Feature

• Add Force Name API (Added Force Name API chisel#1634)
• Use lo and hi instead of left and right in SeqUtils prefixing

Bugfixes

• Provide user source locators in errors (Provide user source locators in Builder.error errors chisel#1618)
• Fix quadratic growth of names in recursive functions (When prefixing with a data, eagerly get local name chisel#1614)
• Support Cat with zero-length Vecs (Enable Cat of Zero Element Vec chisel#1623)
• Make -e option work in object ChiselStage methods (Make -e option work with ChiselStage methods chisel#1630)
• Fix module name collisions in injecting aspect (Bugfix - module name collision for injecting aspect chisel#1635)

Performance

• Use List[String] for prefix stack to enable structural sharing (Change prefix stack to List[String] chisel#1617)
• Cheaper lookup for names of aggregate fields in prefixing (Use Data refs for name prefixing with aggregate elements chisel#1616)
• Fix memory use bug in LowerTypes (Remove caching from RenameMap firrtl#1938)

Related issue:

Type of change: bug fix

Impact: no functional change

Development Phase: implementation

Release Notes

Bump Chisel along 3.4.x release branch (v3.4.1 is not yet released)

[mwachs5]

LGTM if it passes regressions!

[jackkoenig]

Going to rebase this when chipsalliance/chisel#1649 is backported

[hcook]

Confirming forceName works for my use case, thanks!