Simplify version parsing

Co-authored-by: Mara Bos <[email protected]>

src/lib.rs

@@ -989,8 +989,7 @@ impl Version {
         //
         // CMake suite maintained and supported by Kitware (kitware.com/cmake).
         // ```
-        let version = s.lines().find(|s| s.starts_with("cmake version "))?;
-        let version = &version["cmake version ".len()..]; // strip prefix
+        let version = s.lines().next()?.strip_prefix("cmake version ")?;
         let mut digits = version.splitn(3, '.'); // split version string to major minor patch
         let major = digits.next()?.parse::<u32>().ok()?;
         let minor = digits.next()?.parse::<u32>().ok()?;