package.json: update eslint versions

These were pretty old, and didn't need to be locked down quite so
hard.  Update them, then deal with the fallout including the need to
have exceptions for the existing indentation.  A subsequent commit
might tighten these back up.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>

.eslintrc.js

@@ -16,6 +16,12 @@ module.exports = {
     camelcase: 'off',
     curly: 'error',
     eqeqeq: 'error',
+    indent: ['error', 2, {
+      ArrayExpression: 'first',
+      CallExpression: {arguments: 'first'},
+      MemberExpression: 'off',
+      ObjectExpression: 'first'
+    }],
     'max-len': ['error', {code: 120, tabWidth: 2}],
     'no-constant-condition': 'off',
     'no-fallthrough': ['error', {commentPattern: 'FALLTHRU'}],
@@ -40,6 +46,7 @@ module.exports = {
     yoda: ['error', 'always', {exceptRange: true}]
   },
   parserOptions: {
+    ecmaVersion: 6,
     sourceType: 'module'
   }
 }

package.json

@@ -19,8 +19,8 @@
   "main": "./lib/Layout.js",
   "devDependencies": {
     "coveralls": "^3.0.0",
-    "eslint": "~4.18.2",
-    "eslint-config-google": "~0.9.1",
+    "eslint": "^7.30.0",
+    "eslint-config-google": "~0.14.0",
     "eslint-plugin-pabigot": "~1.1.0",
     "jsdoc": "~3.6.7",
     "lodash": "~4.17.5",