bump MSRV to 1.85.0

.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

Cargo.toml

@@ -176,7 +176,7 @@ authors = ["The Wasmtime Project Developers"]
 edition = "2021"
 # Wasmtime's current policy is that this number can be no larger than the
 # current stable release of Rust minus 2.
-rust-version = "1.84.0"
+rust-version = "1.85.0"
 
 [workspace.lints.rust]
 # Turn on some lints which are otherwise allow-by-default in rustc.