fix: reexport duplicate SubscriptionPaymentBehaviour

[raulsi]

Summary

Checklist

• [x] ran cargo make fmt
• [x] using conventional commits to hightlight user-facing fixes and features

[codecov[bot]]

Codecov Report

Merging #343 (dbcff41) into master (204d56d) will increase coverage by 0.92%. The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #343      +/-   ##
=========================================
+ Coverage    5.57%   6.50%   +0.92%     
=========================================
  Files         148     131      -17     
  Lines       14624   20243    +5619     
=========================================
+ Hits          816    1317     +501     
- Misses      13808   18926    +5118     

Impacted Files	Coverage Δ
src/client/base/async_std.rs	89.42% <0.00%> (-1.79%)	:arrow_down:
src/client/base/tokio.rs	92.36% <0.00%> (-1.11%)	:arrow_down:
src/client/request_strategy.rs	94.80% <0.00%> (-0.94%)	:arrow_down:
src/resources/generated/customer.rs	20.00% <0.00%> (-0.59%)	:arrow_down:
src/resources/card.rs	0.00% <0.00%> (ø)
src/resources/order_ext.rs	0.00% <0.00%> (ø)
src/resources/token_ext.rs	0.00% <0.00%> (ø)
src/resources/charge_ext.rs	0.00% <0.00%> (ø)
src/resources/payout_ext.rs	0.00% <0.00%> (ø)
src/resources/review_ext.rs	0.00% <0.00%> (ø)
... and 151 more

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[stripe-openapi-bot]

:tada: This PR is included in version 0.18.3 :tada:

The release is available on:

• v0.18.3
• GitHub release

Your semantic-release bot :package::rocket: