chore(deps-dev): bump eslint from 8.57.0 to 9.6.0 (#335)

* chore(deps-dev): bump eslint from 8.57.0 to 9.6.0

Bumps [eslint](https://github.com/eslint/eslint) from 8.57.0 to 9.6.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v8.57.0...v9.6.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* chore: migrate to new eslint config format

Made by running "npx @eslint/migrate-config .eslintrc.js" and committing the
result.

Signed-off-by: Will Murphy <will.murphy@anchore.com>

* chore: serialize tests to prevent race in CI

Otherwise, multiple tests try to install grype, resulting in a test failing with
a timeout and "Spawn: ETXTBSY".

Signed-off-by: Will Murphy <will.murphy@anchore.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Will Murphy <will.murphy@anchore.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Will Murphy <will.murphy@anchore.com>

eslint.config.mjs

@@ -0,0 +1,30 @@
+import globals from "globals";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+export default [...compat.extends("eslint:recommended"), {
+    languageOptions: {
+        globals: {
+            ...globals.commonjs,
+            ...globals.jest,
+            ...globals.node,
+            Atomics: "readonly",
+            SharedArrayBuffer: "readonly",
+        },
+
+        ecmaVersion: 2018,
+        sourceType: "commonjs",
+    },
+
+    rules: {},
+}];