Update libgit2 to v1.8.6

ethomson · ethomson · commit c77ed1fa6e59 · 2026-07-18T12:00:57.000+01:00
diff --git a/libgit2 b/libgit2
@@ -1 +1 @@
-Subproject commit 3f4182d15eab74a302718f2de454ffadb1995626
+Subproject commit 5853918c4c6a7b12f8becf4bd11ff4362ebb9020
