Update regex to v1.5.5 (from 1.5.4) to avoid performance vulnerability.

[lemmih]

Summary of changes
Changes introduced in this pull request:

• Bump regex dependency to v1.5.5

Reference issue to close (if applicable)

Other information and links

[codecov]

Codecov Report

Merging #1472 (c07a3bc) into main (c54baa2) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1472   +/-   ##
=======================================
  Coverage   26.24%   26.25%           
=======================================
  Files         312      312           
  Lines       23788    23786    -2     
=======================================
+ Hits         6244     6245    +1     
+ Misses      17544    17541    -3     

Impacted Files	Coverage Δ
forest/src/cli/mod.rs	0.00% <0.00%> (ø)
vm/interpreter/tests/transfer_test.rs	88.05% <0.00%> (ø)
vm/actor_interface/src/builtin/market/mod.rs	0.00% <0.00%> (ø)
vm/actor_interface/src/builtin/mod.rs	5.26% <0.00%> (+0.26%)	⬆️
ipld/hamt/src/pointer.rs	35.18% <0.00%> (+1.85%)	⬆️

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