bump nushell from release version to development version (#9215)

# Description

Bump nushell to 0.80.1 development version

# User-Facing Changes
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helps us keep track of breaking changes. -->

# Tests + Formatting
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Make sure you've run and fixed any issues with these commands:

- `cargo fmt --all -- --check` to check standard code formatting (`cargo
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> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
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> toolkit check pr
> ```
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crates/nu-utils/src/sample_config/default_config.nu

@@ -1,6 +1,6 @@
 # Nushell Config File
 #
-# version = 0.80.0
+# version = 0.80.1
 
 # For more information on defining custom themes, see
 # https://www.nushell.sh/book/coloring_and_theming.html

crates/nu-utils/src/sample_config/default_env.nu

@@ -1,6 +1,6 @@
 # Nushell Environment Config File
 #
-# version = 0.80.0
+# version = 0.80.1
 
 def create_left_prompt [] {
     mut home = ""