chore: bump toolchain to v4.27.0 (#716)

kim-em · web-flow · commit 9137d010a277 · 2026-01-23T23:30:59.000Z
diff --git a/lean-toolchain b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.27.0-rc1
+leanprover/lean4:v4.27.0
