Update vendor/libvalkey to the current main

Mikhail Koviazin · Mikhail Koviazin · commit 873465406d80 · 2024-07-31T15:16:37.000+02:00
The new commits in `libvalkey` bring fixes for Windows 32 bit build,
hence the CI should start passing now.

Signed-off-by: Mikhail Koviazin &lt;mikhail.koviazin@aiven.io&gt;
diff --git a/vendor/libvalkey b/vendor/libvalkey
@@ -1 +1 @@
-Subproject commit 7e361d6f3810684c6b364db4383172ed2d4e1b4b
+Subproject commit 0635b070448825f10c27611189363d633ca75527
