Fix CI issues and set MSRV to 1.95

[elmarco]

This commit fixes several CI-related issues:

1. Remove unnecessary unsafe blocks in cpuid.rs

   • In Rust 1.95+, __cpuid is a safe function
   • Removed unsafe wrappers around __cpuid calls
   • Function remains safe for all callers

2. Update dependencies to fix security advisories

   • Updated time crate from 0.3.45 to 0.3.54 (CVE fix)
   • Updated aws-lc-rs from 1.15.3 to 1.17.3 (multiple CVE fixes)
   • Updated bytes from 1.11.0 to 1.12.1 (integer overflow fix)
   • All cargo-deny advisories now resolved

3. Set MSRV to 1.95

   • Required for safe __cpuid intrinsic
   • Added rust-version field to Cargo.toml
   • Added MSRV check job to CI workflow

4. Update typos.toml

   • Added exclusions for local untracked directories
   • Ensures local CI runs match GitHub Actions environment

All CI checks now pass:

• Format ✓
• Typos ✓
• Deny ✓
• Clippy ✓
• Tests ✓
• Build ✓