chore: release 4.13.0 (#1545)

🤖 I have created a release \*beep\* \*boop\*
---
## [4.13.0](https://www.github.com/googleapis/nodejs-firestore/compare/v4.12.3...v4.13.0) (2021-06-29)


### Features

* add read-only transactions ([#1541](https://www.github.com/googleapis/nodejs-firestore/issues/1541)) ([ca4241e](https://www.github.com/googleapis/nodejs-firestore/commit/ca4241eb3ee4abb8453b6da0911397187dc18dde))
* retry BatchGetDocuments RPCs that fail with errors ([#1544](https://www.github.com/googleapis/nodejs-firestore/issues/1544)) ([b39dd3c](https://www.github.com/googleapis/nodejs-firestore/commit/b39dd3c65549fb1a651c1722d8ea2c038e152417))


### Bug Fixes

* **deps:** google-gax v2.17.0 with mTLS ([#1546](https://www.github.com/googleapis/nodejs-firestore/issues/1546)) ([a322345](https://www.github.com/googleapis/nodejs-firestore/commit/a32234510d487982b950c88575b9425c531c2d94))
* make request optional in all cases ([#1536](https://www.github.com/googleapis/nodejs-firestore/issues/1536)) ([f6edfc1](https://www.github.com/googleapis/nodejs-firestore/commit/f6edfc181ca39cd307eab6d141db08f377d5cfdf))
---


This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).

CHANGELOG.md

@@ -4,6 +4,20 @@
 
 [1]: https://www.npmjs.com/package/@google-cloud/firestore?activeTab=versions
 
+## [4.13.0](https://www.github.com/googleapis/nodejs-firestore/compare/v4.12.3...v4.13.0) (2021-06-29)
+
+
+### Features
+
+* add read-only transactions ([#1541](https://www.github.com/googleapis/nodejs-firestore/issues/1541)) ([ca4241e](https://www.github.com/googleapis/nodejs-firestore/commit/ca4241eb3ee4abb8453b6da0911397187dc18dde))
+* retry BatchGetDocuments RPCs that fail with errors ([#1544](https://www.github.com/googleapis/nodejs-firestore/issues/1544)) ([b39dd3c](https://www.github.com/googleapis/nodejs-firestore/commit/b39dd3c65549fb1a651c1722d8ea2c038e152417))
+
+
+### Bug Fixes
+
+* **deps:** google-gax v2.17.0 with mTLS ([#1546](https://www.github.com/googleapis/nodejs-firestore/issues/1546)) ([a322345](https://www.github.com/googleapis/nodejs-firestore/commit/a32234510d487982b950c88575b9425c531c2d94))
+* make request optional in all cases ([#1536](https://www.github.com/googleapis/nodejs-firestore/issues/1536)) ([f6edfc1](https://www.github.com/googleapis/nodejs-firestore/commit/f6edfc181ca39cd307eab6d141db08f377d5cfdf))
+
 ### [4.12.3](https://www.github.com/googleapis/nodejs-firestore/compare/v4.12.2...v4.12.3) (2021-06-16)
 
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@google-cloud/firestore",
   "description": "Firestore Client Library for Node.js",
-  "version": "4.12.3",
+  "version": "4.13.0",
   "license": "Apache-2.0",
   "author": "Google Inc.",
   "engines": {

samples/package.json

@@ -11,7 +11,7 @@
     "test": "mocha --timeout 600000"
   },
   "dependencies": {
-    "@google-cloud/firestore": "^4.12.3"
+    "@google-cloud/firestore": "^4.13.0"
   },
   "devDependencies": {
     "chai": "^4.2.0",