Update lean-toolchain for testing leanprover/lean4#14198

leanprover-bot · leanprover-bot · commit c8a5bef0718d · 2026-06-27T11:46:59.000Z
diff --git a/lean-toolchain b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2026-06-27
+leanprover/lean4-pr-releases:pr-release-14198-456b781

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-leanprover/lean4:nightly-2026-06-27`
	`1`	`+leanprover/lean4-pr-releases:pr-release-14198-456b781`