Revert "[build] pin whisper-rs dependency to a specific commit for reproducible builds; update documentation accordingly"

This reverts commit 152fde36ae.

docs/ci.md

@@ -14,10 +14,6 @@ Example GitHub Actions job (outline)
   steps:
   - uses: actions/checkout@v4
   - uses: dtolnay/rust-toolchain@stable
-  - name: Print resolved whisper-rs rev
-    run: |
-      echo "Resolved whisper-rs revision:" && \
-      awk '/name = "whisper-rs"/{f=1} f&&/source = "git\+.*whisper-rs#/{match($0,/#([0-9a-f]{7,40})"/,m); if(m[1]){print m[1]; exit}}' Cargo.lock
   - name: Build
     run: cargo build --all-targets --locked
   - name: Test

docs/development.md

@@ -13,12 +13,6 @@ Rust toolchain
   - rustup install stable
   - rustup default stable
 
-Dependency pinning
-- We pin whisper-rs (git dependency) to a known-good commit in Cargo.toml for reproducibility.
-- To bump it, resolve/test the desired commit locally, then run:
-  - cargo update -p whisper-rs --precise 135b60b85a15714862806b6ea9f76abec38156f1
-  Replace the SHA with the desired commit and update the rev in Cargo.toml accordingly.
-
 Build
 - CPU-only (default):
   - cargo build