update vendored flac

sezero · sezero · commit b45ada4e1bfa · 2026-02-18T20:56:40.000+03:00
(cherry picked from commit d88586f)
diff --git a/external/flac b/external/flac
@@ -1 +1 @@
-Subproject commit 86b360863221d0f6957e01d477710759e18ecdbf
+Subproject commit efc0d01b749789aae5072e2b8709f91e81322624
