fix(release): remove --locked from cargo check in release prepare

cargo check --locked fails after bumping version in Cargo.toml because
Cargo.lock needs to be regenerated with the new root package version.
Semantic-release bump then committed Cargo.toml+CHANGELOG but lockfile
stayed stale, so the whole prepare step errored out.

.releaserc.json

@@ -5,7 +5,7 @@
     "@semantic-release/release-notes-generator",
     "@semantic-release/changelog",
     ["@semantic-release/exec", {
-      "prepareCmd": "sed -i 's/^version = \\\"[^\\\"]*\\\"/version = \\\"${nextRelease.version}\\\"/' Cargo.toml && cargo check --locked"
+      "prepareCmd": "sed -i 's/^version = \\\"[^\\\"]*\\\"/version = \\\"${nextRelease.version}\\\"/' Cargo.toml && cargo check"
     }],
     ["@semantic-release/git", {
       "assets": ["Cargo.toml", "Cargo.lock", "CHANGELOG.md"],