Fix tarpaulin skip attribute to latest (#11552)

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# Description
Updated the attribute as per the latest version of
[tarpaulin](https://github.com/xd009642/tarpaulin) to fix compilation
error when used as library with latest tarpaulin.

https://github.com/xd009642/tarpaulin/tree/develop?tab=readme-ov-file#ignoring-code-in-files

# User-Facing Changes
None

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crates/nu-system/src/macos.rs

@@ -27,7 +27,7 @@ pub struct ProcessInfo {
     pub interval: Duration,
 }
 
-#[cfg_attr(tarpaulin, skip)]
+#[cfg_attr(tarpaulin, ignore)]
 pub fn collect_proc(interval: Duration, _with_thread: bool) -> Vec<ProcessInfo> {
     let mut base_procs = Vec::new();
     let mut ret = Vec::new();
@@ -116,7 +116,7 @@ pub fn collect_proc(interval: Duration, _with_thread: bool) -> Vec<ProcessInfo>
     ret
 }
 
-#[cfg_attr(tarpaulin, skip)]
+#[cfg_attr(tarpaulin, ignore)]
 fn get_arg_max() -> size_t {
     let mut mib: [c_int; 2] = [libc::CTL_KERN, libc::KERN_ARGMAX];
     let mut arg_max = 0i32;
@@ -144,7 +144,7 @@ pub struct PathInfo {
     pub cwd: PathBuf,
 }
 
-#[cfg_attr(tarpaulin, skip)]
+#[cfg_attr(tarpaulin, ignore)]
 unsafe fn get_unchecked_str(cp: *mut u8, start: *mut u8) -> String {
     let len = cp as usize - start as usize;
     let part = Vec::from_raw_parts(start, len, len);
@@ -153,7 +153,7 @@ unsafe fn get_unchecked_str(cp: *mut u8, start: *mut u8) -> String {
     tmp
 }
 
-#[cfg_attr(tarpaulin, skip)]
+#[cfg_attr(tarpaulin, ignore)]
 fn get_path_info(pid: i32, mut size: size_t) -> Option<PathInfo> {
     let mut proc_args = Vec::with_capacity(size);
     let ptr: *mut u8 = proc_args.as_mut_slice().as_mut_ptr();
@@ -254,7 +254,7 @@ fn get_path_info(pid: i32, mut size: size_t) -> Option<PathInfo> {
     }
 }
 
-#[cfg_attr(tarpaulin, skip)]
+#[cfg_attr(tarpaulin, ignore)]
 fn clone_task_all_info(src: &TaskAllInfo) -> TaskAllInfo {
     let pbsd = BSDInfo {
         pbi_flags: src.pbsd.pbi_flags,