style: format in ci.yml

[tsenovilla]

The rustfmt.toml used in the repo contains a lot of features that are only available in nightly Rust.

Check this action for example to see all the produced warnings: https://github.com/r0gue-io/pop-cli/actions/runs/10475779407/job/29013207726

Running cargo fmt in nightly Rust during the CI enable those features, which produces a nicer Rust format

[codecov]

Codecov Report

Attention: Patch coverage is 53.33333% with 14 lines in your changes missing coverage. Please review.

Project coverage is 70.26%. Comparing base (1d41cd4) to head (71838be).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/pop-cli/src/commands/new/pallet.rs	0.00%	5 Missing ⚠️
crates/pop-cli/src/commands/new/parachain.rs	0.00%	1 Missing and 1 partial ⚠️
crates/pop-cli/src/commands/install/mod.rs	0.00%	1 Missing ⚠️
crates/pop-cli/src/commands/up/parachain.rs	0.00%	1 Missing ⚠️
crates/pop-common/src/lib.rs	50.00%	0 Missing and 1 partial ⚠️
crates/pop-common/src/sourcing/binary.rs	83.33%	0 Missing and 1 partial ⚠️
crates/pop-common/src/sourcing/mod.rs	66.66%	1 Missing ⚠️
crates/pop-parachains/src/build.rs	50.00%	0 Missing and 1 partial ⚠️
crates/pop-parachains/src/up/mod.rs	50.00%	1 Missing ⚠️

@@           Coverage Diff           @@
##             main     #287   +/-   ##
=======================================
  Coverage   70.26%   70.26%           
=======================================
  Files          53       53           
  Lines        9086     9086           
  Branches     9086     9086           
=======================================
  Hits         6384     6384           
  Misses       1720     1720           
  Partials      982      982           

Files with missing lines	Coverage Δ
crates/pop-cli/src/commands/build/spec.rs	0.00% <ø> (ø)
crates/pop-cli/src/commands/up/contract.rs	25.65% <100.00%> (ø)
crates/pop-common/src/git.rs	75.99% <ø> (ø)
crates/pop-common/src/manifest.rs	93.22% <ø> (ø)
crates/pop-common/src/templates/extractor.rs	70.31% <100.00%> (ø)
crates/pop-parachains/src/utils/helpers.rs	79.77% <100.00%> (ø)
crates/pop-cli/src/commands/install/mod.rs	0.00% <0.00%> (ø)
crates/pop-cli/src/commands/up/parachain.rs	7.55% <0.00%> (ø)
crates/pop-common/src/lib.rs	63.63% <50.00%> (ø)
crates/pop-common/src/sourcing/binary.rs	92.30% <83.33%> (ø)
... and 5 more

[AlexD10S]

LGTM. We change it in pop-node too just a week ago: r0gue-io/pop-node#184

[tsenovilla]

Resolved conflicts with main branch. Should be ready to merge :)