ci: remove cc pin to fix CI error

[LagginTimes]

Description

cc dependency was unpinned to fix a clash with cmake that was causing CI errors.

Changelog notice

• Unpinned cc dependency.

Checklists

All Submissions:

• I've signed all my commits
• I followed the contribution guidelines
• I ran cargo fmt and cargo clippy before committing

[ValuedMammal]

I wonder if we could instead just not pin cc?

[LagginTimes]

cc = ^1.0.106 would require a MSRV above 1.63 (reference).

[ValuedMammal]

I'm confused because it looks like cc has since reversed the decision to raise their MSRV, plus this CI failure https://github.com/bitcoindevkit/bdk/actions/runs/13237150987/job/36944325715 points to bdk_electrum as the cause which is supposed to be exempt from our MSRV of 1.63

[LagginTimes]

Ah yes good catch, looks like cc 1.1.3 reduced the MSRV back to 1.63. I'll make the changes to this PR accordingly.

Edit:

points to bdk_electrum as the cause which is supposed to be exempt from our MSRV of 1.63

I believe this may be because the cargo updates from pin-msrv.sh run before the build and test commands that explicitly exclude bdk_electrum.

[ValuedMammal]

ACK 979f9d1