Upgrade all dependencies

Production:
- @apollo/server 5.0.0 → 5.5.0
- @graphql-tools/schema 10.0.25 → 10.0.31
- graphql-ws 6.0.6 → 6.0.8
- lodash 4.17.21 → 4.17.23
- ws 8.18.3 → 8.20.0

Dev:
- eslint 9 → 10 (migrate config to defineConfig, remove .eslintignore)
- typescript 5 → 6 (migrate tsconfig to moduleResolution node16)
- jest 30.1 → 30.3
- prettier 3.6 → 3.8
- tsx 4.20 → 4.21
- nodemon 3.1.10 → 3.1.14
- npm-check-updates 18 → 19
- Add globals as explicit devDependency

Removed:
- eslint-plugin-node (unused, not ESLint 10 compatible)
- .eslintignore (migrated to eslint.config.js)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: icebob

.eslintignore

@@ -1,10 +1,9 @@
-const js = require("@eslint/js");
+const { defineConfig, globalIgnores } = require("eslint/config");
 const globals = require("globals");
 const eslintPluginPrettierRecommended = require("eslint-plugin-prettier/recommended");
 
-/** @type {import('eslint').Linter.FlatConfig[]} */
-module.exports = [
-	js.configs.recommended,
+/** @type {import('eslint').Linter.Config[]} */
+module.exports = defineConfig([
 	eslintPluginPrettierRecommended,
 	{
 		files: ["**/*.js", "**/*.mjs"],
@@ -25,19 +24,12 @@ module.exports = [
 				fetch: "readonly"
 			}
 		},
-		// plugins: ["node", "security"],
 		rules: {
 			"no-var": ["error"],
 			"no-console": ["error"],
 			"no-unused-vars": ["warn"],
-			"no-trailing-spaces": ["error"],
-			"security/detect-object-injection": ["off"],
-			"security/detect-non-literal-require": ["off"],
-			"security/detect-non-literal-fs-filename": ["off"],
-			"no-process-exit": ["off"],
-			"node/no-unpublished-require": 0
+			"no-trailing-spaces": ["error"]
 		}
-		// ignores: ["benchmark/test.js", "test/typescript/hello-world/out/*.js"]
 	},
 	{
 		files: ["test/**/*.js"],
@@ -53,4 +45,4 @@ module.exports = [
 			"no-unused-vars": ["off"]
 		}
 	}
-];
+]);