feat: update polkadot-sdk versions to stable2512

[moliholy]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.25%. Comparing base (39335a8) to head (875434b).

Files with missing lines	Patch %	Lines
crates/pop-cli/src/commands/bench/pallet.rs	53.84%	3 Missing and 3 partials ⚠️
crates/pop-chains/src/bench/binary.rs	0.00%	2 Missing ⚠️
crates/pop-chains/src/new_chain.rs	60.00%	1 Missing and 1 partial ⚠️

@@            Coverage Diff             @@
##             main     #899      +/-   ##
==========================================
- Coverage   73.50%   71.25%   -2.26%     
==========================================
  Files         117      117              
  Lines       28120    28124       +4     
  Branches    28120    28124       +4     
==========================================
- Hits        20669    20039     -630     
- Misses       5287     5975     +688     
+ Partials     2164     2110      -54     

Files with missing lines	Coverage Δ
crates/pop-chains/src/omni_node.rs	86.41% <100.00%> (ø)
crates/pop-chains/src/registry/system.rs	99.17% <100.00%> (ø)
crates/pop-chains/src/up/mod.rs	87.21% <100.00%> (ø)
crates/pop-chains/src/up/relay.rs	85.71% <100.00%> (ø)
crates/pop-cli/src/commands/up/network.rs	17.08% <ø> (ø)
crates/pop-cli/src/commands/upgrade.rs	66.41% <100.00%> (-11.20%)	⬇️
crates/pop-common/src/polkadot_sdk.rs	97.29% <100.00%> (ø)
crates/pop-common/src/sourcing/binary.rs	92.63% <100.00%> (ø)
crates/pop-common/src/sourcing/mod.rs	88.50% <100.00%> (ø)
crates/pop-chains/src/bench/binary.rs	51.06% <0.00%> (-34.05%)	⬇️
... and 2 more

... and 43 files with indirect coverage changes

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