Feature request : support JSR syntax

[MarArMar]

Summary : packaged on JSR like "https://jsr.io/@ryoppippi/unplugin-typia" raise errors when ncu tries to check their upgrade and also they don't get upgraded

• I have searched for similar issues

---

Steps to Reproduce

.ncurc: not used

Dependencies:

{
  "name": "example-jsr",
  "version": "0.0.1",
  "dependencies": {
    "@ryoppippi/unplugin-typia": "npm:@jsr/[email protected]",
  },
}

Steps:

npx jsr add -D @ryoppippi/unplugin-typia
# or 
bun x jsr add -D @ryoppippi/unplugin-typia
# then replace with an older verison like @0.6.8 then attempt to upgrade using : 
ncu --upgrade --target semver --packageManager bun

Current Behavior

 @ryoppippi/unplugin-typia  404 Not Found - GET https://registry.npmjs.org/@jsr%2fryoppippi__unplugin-typia. All 3 retry attempts failed. Either your internet connection is down, the registry is inaccessible, the authentication credentials are invalid, or the package does not exist. 

Expected Behavior

It would upgrade to

{
  "name": "example-jsr",
  "version": "0.0.1",
  "dependencies": {
    "@ryoppippi/unplugin-typia": "npm:@jsr/[email protected]",
  },
}

Workaround :

  output=$(ncu --upgrade --target "$ncu_update_method" --packageManager "$packageManager" 2>&1)

  if echo "$output" | grep -q "404 Not Found - GET https://registry.npmjs.org/@jsr"; then
    # Handles JSR : 404 Not Found - GET https://registry.npmjs.org/@jsr ... 
    jsr_url=$(echo "$output" | grep -o 'https://registry.npmjs.org/@jsr[^"]*' | sed 's|https://registry.npmjs.org/@jsr%2f|https://jsr.io/@|' | sed 's|__|/|')
    package_name=$(echo "$jsr_url" | sed 's|https://jsr.io/||' | cut -d'.' -f1)
    echo "JSR package detected: '$package_name'"
    bun_jsr_view=$(bun x jsr view "$package_name")
    version=$(echo "$bun_jsr_view" | grep -oP '@\K[0-9]+\.[0-9]+\.[0-9]+(?= \|)')
    echo "Trying to upgrade to '$package_name@$version'"
    bun x jsr add "$package_name@$version"
  else
    echo "$output"
  fi