chore: update version to 3.8.6

YDX-2147483647 · YDX-2147483647 · commit dfab711316dc · 2025-10-17T14:05:42.000+08:00
Relates to #686
diff --git a/bithesis.dtx b/bithesis.dtx
@@ -21,10 +21,10 @@
 %<thesis>\ProvidesExplClass{bithesis}
 %<report>\ProvidesExplClass{bitreport}
 %<beamer>\ProvidesExplClass{bitbeamer}
-%<cls>  {2025-05-15} {3.8.5} {BIT Thesis Templates}
+%<cls>  {2025-10-17} {3.8.6} {BIT Thesis Templates}
 %
 %<*driver>
-\ProvidesFile{bithesis.dtx}[2025/05/15 v3.8.5 BIT Thesis Templates]
+\ProvidesFile{bithesis.dtx}[2025/10/17 v3.8.6 BIT Thesis Templates]
 \documentclass[letterpaper]{l3doc}
 \usepackage{dtx-style}
 
