fix(deps): update dependency lru-cache to v6

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
lru-cache	dependencies	major	^5.0.0 -> ^6.0.0

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Release Notes

isaacs/node-lru-cache

v6.0.0

Compare Source

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[codecov]

Codecov Report

Merging #995 into master will increase coverage by 1.18%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #995      +/-   ##
==========================================
+ Coverage   91.18%   92.37%   +1.18%     
==========================================
  Files          21       21              
  Lines        4052     4052              
  Branches      488      454      -34     
==========================================
+ Hits         3695     3743      +48     
+ Misses        357      309      -48     

Impacted Files	Coverage Δ
src/auth/jwtclient.ts	96.08% <0.00%> (+0.83%)	⬆️
src/auth/idtokenclient.ts	100.00% <0.00%> (+1.23%)	⬆️
src/auth/oauth2client.ts	96.29% <0.00%> (+1.28%)	⬆️
src/auth/computeclient.ts	100.00% <0.00%> (+1.53%)	⬆️
src/auth/googleauth.ts	97.40% <0.00%> (+1.60%)	⬆️
src/auth/refreshclient.ts	98.77% <0.00%> (+3.06%)	⬆️
src/auth/envDetect.ts	97.36% <0.00%> (+5.26%)	⬆️
src/crypto/node/crypto.ts	100.00% <0.00%> (+5.76%)	⬆️

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