REGTESTS: mark sample_fetches/hashes.vtc as 2.4-only
Commit 9eea56009 ("REGTESTS: add tests for the xxh3 converter") introduced
the xxh3 to the tests thus made it incompatible with 2.3 and older, let's
upgrade the version requirement.
diff --git a/reg-tests/sample_fetches/hashes.vtc b/reg-tests/sample_fetches/hashes.vtc
index 883845d..bcc3952 100644
--- a/reg-tests/sample_fetches/hashes.vtc
+++ b/reg-tests/sample_fetches/hashes.vtc
@@ -1,6 +1,6 @@
varnishtest "Hash validity test"
-#REQUIRE_VERSION=1.9
+#REQUIRE_VERSION=2.4
feature ignore_unknown_macro