Update version check in validate_spec to support 1.X.Y version.

Previously, the validate_spec function only supported runtime spec versions that started with "1.0".
This commit updates the function to support all versions starting with "1." (e.g., 1.X.Y), making it compatible with a broader range of runtime spec versions.

Signed-off-by: utam0k <k0ma@utam0k.jp>

crates/libcontainer/src/container/init_builder.rs

@@ -132,9 +132,10 @@ impl<'a> InitContainerBuilder<'a> {
     }
 
     fn validate_spec(spec: &Spec) -> Result<()> {
-        if !spec.version().starts_with("1.0") {
+        let version = spec.version();
+        if !version.starts_with("1.") {
             bail!(
-                "runtime spec has incompatible version '{}'. Only 1.0.X is supported",
+                "runtime spec has incompatible version '{}'. Only 1.X.Y is supported",
                 spec.version()
             );
         }