chore: update eslint* dependencies (major) (#20)

Related to bpmn-io/internal-docs#1042

Author: renovate[bot]

.eslintignore

@@ -0,0 +1,29 @@
+import bpmnIoPlugin from 'eslint-plugin-bpmn-io';
+
+export default [
+  {
+    ignores: [ 'public' ],
+  },
+  ...bpmnIoPlugin.configs.browser,
+  ...bpmnIoPlugin.configs.node.map(config => {
+    return {
+      ...config,
+      files: [
+        '**/*.config.js',
+        '**/*.conf.js',
+        'test/**/*.js',
+      ]
+    };
+  }),
+  ...bpmnIoPlugin.configs.mocha.map(config => {
+    return {
+      ...config,
+      files: [
+        'test/**/*.js',
+      ]
+    };
+  }),
+  {
+    files: [ '**/*.js', '**/*.mjs' ],
+  }
+];