chore: downgrade to tendermint v0.34.x

[julienrbrt]

Description

Downgrade to tendermind v0.34.x as 0.35 is discontinued.
Based on #12221 and #12509.

The rosetta build is failing but I cannot run make rosetta-data (ref #12772)

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Author Checklist

All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.

I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
• targeted the correct branch (see PR Targeting)
• provided a link to the relevant issue or specification
• followed the guidelines for building modules
• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

Reviewers Checklist

All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.

I have...

• confirmed the correct type prefix in the PR title
• confirmed ! in the type prefix if API or client breaking change
• confirmed all author checklist items have been addressed
• reviewed state machine logic
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage
• manually tested (if applicable)

[codecov]

Codecov Report

Merging #12958 (9e2cca7) into main (4fe7797) will decrease coverage by 0.25%.
The diff coverage is 60.38%.

@@            Coverage Diff             @@
##             main   #12958      +/-   ##
==========================================
- Coverage   55.87%   55.62%   -0.26%     
==========================================
  Files         646      651       +5     
  Lines       54895    55037     +142     
==========================================
- Hits        30675    30614      -61     
- Misses      21762    21953     +191     
- Partials     2458     2470      +12     

Impacted Files	Coverage Δ
baseapp/abci.go	64.09% <0.00%> (-0.33%)	⬇️
client/flags/flags.go	19.35% <0.00%> (-0.32%)	⬇️
client/rpc/status.go	66.66% <ø> (ø)
client/utils.go	34.92% <0.00%> (ø)
server/rosetta/client_online.go	1.35% <0.00%> (ø)
server/swagger.go	0.00% <0.00%> (ø)
simapp/app.go	82.66% <0.00%> (+3.55%)	⬆️
types/result.go	76.74% <ø> (ø)
x/auth/tx/query.go	0.00% <ø> (ø)
x/auth/tx/service.go	0.00% <ø> (ø)
... and 50 more