bump rust-toolchain to 1.71.1 (#10634)

# Description

This PR bumps the rust toolchain to 1.71.1

# User-Facing Changes
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# Tests + Formatting
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crates/nu-glob/src/lib.rs

@@ -1161,10 +1161,10 @@ mod test {
             // check windows absolute paths with host/device components
             let root_with_device = current_dir()
                 .ok()
-                .and_then(|p| match p.components().next().unwrap() {
+                .map(|p| match p.components().next().unwrap() {
                     Component::Prefix(prefix_component) => {
                         let path = Path::new(prefix_component.as_os_str()).join("*");
-                        Some(path)
+                        path
                     }
                     _ => panic!("no prefix in this path"),
                 })

rust-toolchain.toml

@@ -16,4 +16,4 @@ profile = "default"
 # use in nushell, we may opt to use the bleeding edge stable version of rust.
 # I believe rust is on a 6 week release cycle and nushell is on a 4 week release cycle.
 # So, every two nushell releases, this version number should be bumped by one.
-channel = "1.70.0"
+channel = "1.71.1"