tools: update ESLint to 5.6.0

Update ESLint to 5.6.0.
nodejs · Trott · Sep 16, 2018 · Sep 16, 2018 · b1cc703cb33eadadff3451826fb56f0941affd9c
commit b1cc703cb33eadadff3451826fb56f0941affd9c
diff --git a/tools/node_modules/eslint/lib/rules/func-names.js b/tools/node_modules/eslint/lib/rules/func-names.js
diff --git a/tools/node_modules/eslint/lib/rules/no-constant-condition.js b/tools/node_modules/eslint/lib/rules/no-constant-condition.js
diff --git a/tools/node_modules/eslint/node_modules/acorn/AUTHORS b/tools/node_modules/eslint/node_modules/acorn/AUTHORS
diff --git a/tools/node_modules/eslint/node_modules/acorn/README.md b/tools/node_modules/eslint/node_modules/acorn/README.md
diff --git a/tools/node_modules/eslint/node_modules/acorn/dist/acorn.es.js b/tools/node_modules/eslint/node_modules/acorn/dist/acorn.es.js
diff --git a/tools/node_modules/eslint/node_modules/acorn/dist/acorn.js b/tools/node_modules/eslint/node_modules/acorn/dist/acorn.js
diff --git a/tools/node_modules/eslint/node_modules/acorn/package.json b/tools/node_modules/eslint/node_modules/acorn/package.json
diff --git a/tools/node_modules/eslint/node_modules/color-name/README.md b/tools/node_modules/eslint/node_modules/color-name/README.md
diff --git a/tools/node_modules/eslint/node_modules/color-name/index.js b/tools/node_modules/eslint/node_modules/color-name/index.js
diff --git a/tools/node_modules/eslint/node_modules/debug/.coveralls.yml b/tools/node_modules/eslint/node_modules/debug/.coveralls.yml
diff --git a/tools/node_modules/eslint/node_modules/debug/Makefile b/tools/node_modules/eslint/node_modules/debug/Makefile