Update lean-toolchain for testing leanprover/lean4#7764

leanprover-community-mathlib4-bot · leanprover-community-mathlib4-bot · commit 615a55b60679 · 2025-04-01T01:30:28.000Z
diff --git a/lean-toolchain b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2025-03-31
+leanprover/lean4-pr-releases:pr-release-7764

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-leanprover/lean4:nightly-2025-03-31`
	`1`	`+leanprover/lean4-pr-releases:pr-release-7764`