Update lean-toolchain for testing leanprover/lean4#11242

leanprover-community-mathlib4-bot · leanprover-community-mathlib4-bot · commit 603e1f886cc0 · 2025-11-20T17:30:00.000Z
diff --git a/lean-toolchain b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2025-11-20
+leanprover/lean4-pr-releases:pr-release-11242-64aa26b

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-leanprover/lean4:nightly-2025-11-20`
	`1`	`+leanprover/lean4-pr-releases:pr-release-11242-64aa26b`