Updating SHAs

```bash
#!/usr/bin/env bash
set -euo pipefail

version="7.5.4"
urls=(
"https://raw.githubusercontent.com/PowerShell/PowerShell/refs/tags/v${version}/assets/additionalAttributions.txt"
"https://github.com/PowerShell/PowerShell/releases/download/v${version}/PowerShell-${version}-win-x64.zip"
"https://github.com/PowerShell/PowerShell/releases/download/v${version}/powershell-${version}-linux-x64.tar.gz"
"https://github.com/PowerShell/PowerShell/releases/download/v${version}/powershell-${version}-linux-arm64.tar.gz"
"https://github.com/PowerShell/PowerShell/releases/download/v${version}/powershell-${version}-osx-arm64.tar.gz"
)

for url in "${urls[@]}"; do
checksum="$(curl -fsSL "$url" | sha256sum | awk '{print $1}')"
printf '%s %s\n' "$checksum" "$url"
done
```

Run the supplied Bash script for PowerShell version 7.5.4 and inspect the SHA-256 output for the five listed release URLs. Locate the feedstock metadata that records these checksums, update the values, and verify that all listed artifacts have matching hashes.

Written by the indexing model from the issue text.