Update lean-toolchain for testing leanprover/lean4#13305

leanprover-community-mathlib4-bot · leanprover-community-mathlib4-bot · commit 5c3833c7d9a8 · 2026-04-07T17:10:01.000Z
diff --git a/lean-toolchain b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2026-04-07
+leanprover/lean4-pr-releases:pr-release-13305-5a7028d

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-leanprover/lean4:nightly-2026-04-07`
	`1`	`+leanprover/lean4-pr-releases:pr-release-13305-5a7028d`