Download dependencies and update hashes when running the sync

[angrybayblade]

Proposed changes

Describe the big picture of your changes here to communicate to the maintainers why we should accept this pull request.

Fixes

fixes valory-xyz/open-autonomy#1875

Types of changes

What types of changes does your code introduce to agents-aea?
Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

Put an x in the boxes that apply.

• I have read the CONTRIBUTING doc
• I am making a pull request against the develop branch (left side). Also you should start your branch off our develop.
• Lint and unit tests pass locally with my changes and CI passes too
• I have added tests that prove my fix is effective or that my feature works
• I have checked that code coverage does not decrease.
• I have added necessary documentation (if appropriate)
• Any dependent changes have been merged and published in downstream modules

[codecov-commenter]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (a69aaf3) 91.97% compared to head (4c6b0e7) 91.97%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #680      +/-   ##
==========================================
- Coverage   91.97%   91.97%   -0.01%     
==========================================
  Files         371      371              
  Lines       29591    29596       +5     
==========================================
+ Hits        27216    27220       +4     
- Misses       2375     2376       +1     

Flag	Coverage Δ
unittests	91.97% <100.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
aea/package_manager/base.py	100.00% <100.00%> (ø)
aea/package_manager/v1.py	97.80% <100.00%> (-0.43%)	⬇️

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