Apply clippy fix (#7193)

# Description

rust 1.65.0 has been released for a while, this pr applies lint
suggestions from rust 1.65.0.

# User-Facing Changes

N/A

# Tests + Formatting

Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace --features=extra -- -D warnings -D
clippy::unwrap_used -A clippy::needless_collect` to check that you're
using the standard code style
- `cargo test --workspace --features=extra` to check that all tests pass

# After Submitting

If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.

crates/nu-command/src/strings/encode_decode/base64.rs

@@ -100,7 +100,7 @@ fn action(
     match input {
         Value::Binary { val, .. } => match base64_config.action_type {
             ActionType::Encode => {
-                Value::string(encode_config(&val, base64_config_enum), command_span)
+                Value::string(encode_config(val, base64_config_enum), command_span)
             }
             ActionType::Decode => Value::Error {
                 error: ShellError::UnsupportedInput(