Update lean-toolchain for testing leanprover/lean4#10615

leanprover-community-mathlib4-bot · leanprover-community-mathlib4-bot · commit 47df489f0806 · 2025-09-29T15:34:03.000Z
diff --git a/lean-toolchain b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2025-09-24
+leanprover/lean4-pr-releases:pr-release-10615-b42008f

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-leanprover/lean4:nightly-2025-09-24`
	`1`	`+leanprover/lean4-pr-releases:pr-release-10615-b42008f`