rust-toolchain: Bump rust to stable 1.63

Stan Drozd · Stan Drozd · commit fe69009e56a1 · 2023-01-03T18:24:20.000+01:00
diff --git a/rust-toolchain b/rust-toolchain
@@ -2,5 +2,5 @@
 # ci/rust-version.sh in the branch of the solana repo that corresponds
 # with the version we're using.
 [toolchain]
-channel = "nightly-2022-02-24"
+channel = "1.63.0"
 profile = "minimal"
