fix(ci): use shasum on macOS (sha256sum not available)

Author: drewstone

.github/workflows/release.yml

@@ -92,7 +92,7 @@ jobs:
           tar -cJf "$ARCHIVE" -C "$(dirname "$BIN")" "${{ env.BINARY_NAME }}"
 
           # Generate checksums
-          sha256sum "$ARCHIVE" > "${ARCHIVE}.sha256"
+          if command -v sha256sum &>/dev/null; then sha256sum "$ARCHIVE"; else shasum -a 256 "$ARCHIVE"; fi > "${ARCHIVE}.sha256"
           echo "ARCHIVE=$ARCHIVE" >> "$GITHUB_ENV"
           echo "SHA256_FILE=${ARCHIVE}.sha256" >> "$GITHUB_ENV"
           echo "Binary size: $(du -h "$BIN" | cut -f1)"
@@ -145,7 +145,7 @@ jobs:
 
           ### Verify checksums
           \`\`\`bash
-          sha256sum -c *.sha256
+          sha256sum -c *.sha256 2>/dev/null || shasum -a 256 -c *.sha256
           \`\`\`
 
           ### Install