Update which from 7.0.3 to 8.0.0 (#16045)

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# Description
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This simply updates the `which` dependency from 7.0.3 to 8.0.0, with no
code changes. See
https://github.com/harryfei/which-rs/releases/tag/8.0.0 for release
notes.

# User-Facing Changes
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N/A

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Tested with `cargo test --workspace` and `cargo run -- -c "use
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Cargo.lock

@@ -8217,11 +8217,10 @@ dependencies = [
 
 [[package]]
 name = "which"
-version = "7.0.3"
+version = "8.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24d643ce3fd3e5b54854602a080f34fb10ab75e0b813ee32d00ca2b44fa74762"
+checksum = "d3fabb953106c3c8eea8306e4393700d7657561cb43122571b172bbfb7c7ba1d"
 dependencies = [
- "either",
  "env_home",
  "rustix 1.0.7",
  "winsafe",

Cargo.toml

@@ -184,7 +184,7 @@ uuid = "1.16.0"
 v_htmlescape = "0.15.0"
 wax = "0.6"
 web-time = "1.1.0"
-which = "7.0.3"
+which = "8.0.0"
 windows = "0.56"
 windows-sys = "0.48"
 winreg = "0.52"