fix: support ESLint 10 by using context.filename with getFilename() fallback

[watarukino]

Problem

ESLint 10 removed the long-deprecated context.getFilename() method. As a result, strict-dependencies crashes at rule execution time on ESLint 10:

TypeError: context.getFilename is not a function
Occurred while linting <file>
Rule: "strictDependencies/strict-dependencies"
    at checkImport (.../strict-dependencies/index.js:70:36)

Fix

Use context.filename (available since ESLint 8.40) when present, falling back to context.getFilename() for older ESLint versions:

const fileFullPath = context.filename ?? context.getFilename()

This is the only usage of a removed ESLint 10 context API in the plugin (checked against getFilename / getSourceCode / getScope / getAncestors / getPhysicalFilename / getCwd / parserOptions), so this one-line change restores ESLint 10 compatibility.

Testing

• yarn test: 34/34 passed
• Verified on a large monorepo (ESLint 10.7.0): the rule executes and reports violations correctly with this patch applied (we currently ship it via pnpm patch and would love to drop the patch once this lands 🙏)

[watarukino]

duplicate #193