runtime-rs: update rust to 1.69.0

We are probably hitting this:
rust-lang/rust#63033

Seems like it is worth a try to upgrade to 1.69.0

Signed-off-by: Anastassios Nanos <ananos@nubificus.co.uk>

versions.yaml

@@ -324,12 +324,12 @@ languages:
   rust:
     description: "Rust language"
     notes: "'version' is the default minimum version used by this project."
-    version: "1.68.0"
+    version: "1.69.0"
     meta:
       description: |
         'newest-version' is the latest version known to work when
         building Kata
-      newest-version: "1.68.0"
+      newest-version: "1.69.0"
 
   golangci-lint:
     description: "golangci-lint"