Update lean-toolchain for leanprover/lean4#8204

leanprover-community-mathlib4-bot · leanprover-community-mathlib4-bot · commit d1961481a8d5 · 2025-06-13T19:40:55.000Z
diff --git a/lean-toolchain b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4-pr-releases:pr-release-8204
+leanprover/lean4-pr-releases:pr-release-8204-beaf839

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-leanprover/lean4-pr-releases:pr-release-8204`
	`1`	`+leanprover/lean4-pr-releases:pr-release-8204-beaf839`