feat: add support for Soroban Preview 11

[overcat]

No description provided.

[sisuresh]

@overcat I used your branch and made some changes to build the python sdk for a script we use. I wanted to point out that you'll need to take the fix in transaction_builder here - sisuresh@c4f0862#diff-bbe00442ebb11b8184ba758bd8a8338af869335bd126ec004a41e5edeac94bbe. Hopefully this will save you some time.

[codecov]

Codecov Report

Merging #777 (f457de5) into soroban (5068c18) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           soroban     #777   +/-   ##
========================================
  Coverage    98.34%   98.35%           
========================================
  Files          248      248           
  Lines        12471    12471           
========================================
+ Hits         12265    12266    +1     
+ Misses         206      205    -1     

Flag	Coverage Δ
unittests	98.35% <100.00%> (+<0.01%)	⬆️

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

Files Changed	Coverage Δ
stellar_sdk/soroban_data_builder.py	100.00% <ø> (ø)
stellar_sdk/transaction_builder.py	86.47% <ø> (-0.05%)	⬇️
tests/operation/test_invoke_host_function.py	100.00% <ø> (ø)
stellar_sdk/soroban_rpc.py	100.00% <100.00%> (ø)
stellar_sdk/soroban_server.py	94.69% <100.00%> (+0.94%)	⬆️
tests/test_soroban_data_builder.py	100.00% <100.00%> (ø)
tests/test_soroban_server.py	100.00% <100.00%> (ø)

[overcat]

Thanks @sisuresh, included in 9.0.0a2