Update rust toolchain to 1.48

quodlibetor · quodlibetor · commit f1bf62f6f12f · 2020-11-23T14:30:46.000-05:00
diff --git a/ci/builder/stable.stamp b/ci/builder/stable.stamp
@@ -1 +1 @@
-1.47.0-20201118-154151
+1.48.0-20201123-142044
diff --git a/rust-toolchain b/rust-toolchain
@@ -1 +1 @@
-1.47.0
+1.48.0
