release: only release ppc64le distributions for Python 3.9+

Fixes a bug in the release process.

Author: indygreg

src/release.rs

@@ -101,7 +101,7 @@ pub static RELEASE_TRIPLES: Lazy<BTreeMap<&'static str, TripleRelease>> = Lazy::
         TripleRelease {
             suffixes: linux_suffixes_nopgo.clone(),
             install_only_suffix: "lto",
-            python_version_requirement: None,
+            python_version_requirement: Some(VersionReq::parse(">=3.9").unwrap()),
         },
     );