fix(cdk-assets): use same SDK versions as other packages

[mrgrain]

Fixes dependency resolution warnings when installing toolkit-lib.

npm warn ERESOLVE overriding peer dependency
npm warn While resolving: @aws-sdk/lib-storage@3.750.0
npm warn Found: @aws-sdk/client-s3@3.741.0
npm warn node_modules/@aws-sdk/client-s3
npm warn   @aws-sdk/client-s3@"3.741" from @aws-cdk/toolkit-lib@0.1.0
npm warn   node_modules/@aws-cdk/toolkit-lib
npm warn     @aws-cdk/toolkit-lib@"*" from the root project
npm warn   2 more (@aws-sdk/lib-storage, cdk-assets)
npm warn
npm warn Could not resolve dependency:
npm warn peer @aws-sdk/client-s3@"^3.750.0" from @aws-sdk/lib-storage@3.750.0
npm warn node_modules/cdk-assets/node_modules/@aws-sdk/lib-storage
npm warn   @aws-sdk/lib-storage@"^3.750.0" from cdk-assets@3.0.0-rc.144
npm warn   node_modules/cdk-assets
npm warn
npm warn Conflicting peer dependency: @aws-sdk/client-s3@3.750.0
npm warn node_modules/@aws-sdk/client-s3
npm warn   peer @aws-sdk/client-s3@"^3.750.0" from @aws-sdk/lib-storage@3.750.0
npm warn   node_modules/cdk-assets/node_modules/@aws-sdk/lib-storage
npm warn     @aws-sdk/lib-storage@"^3.750.0" from cdk-assets@3.0.0-rc.144
npm warn     node_modules/cdk-assets

---

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.43%. Comparing base (3e228d6) to head (13a533c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #121      +/-   ##
==========================================
- Coverage   84.80%   84.43%   -0.38%     
==========================================
  Files         196      196              
  Lines       35089    35089              
  Branches     4557     4524      -33     
==========================================
- Hits        29758    29628     -130     
- Misses       5183     5319     +136     
+ Partials      148      142       -6     

Flag	Coverage Δ
suite.unit	84.43% <ø> (-0.38%)	⬇️

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