temporarily reduce msrv_range to one

This will hopefully sidestep the various 1.87 upgrade headaches that will be
addressed upstream.

Signed-off-by: Joel Dice <joel.dice@fermyon.com>

Author: dicej

.github/actions/install-rust/action.yml

@@ -9,7 +9,7 @@ inputs:
   msrv_range:
     description: 'Versions later-than-latest-Rust the MSRV supports'
     required: false
-    default: '2'
+    default: '1'
 
 runs:
   using: composite