chore(main): release 6.15.0 (#1892)

🤖 I have created a release *beep* *boop*
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## [6.15.0](https://togithub.com/googleapis/nodejs-spanner/compare/v6.14.0...v6.15.0) (2023-08-04)


### Features

* Enable leader aware routing by default. This update contains performance optimisations that will reduce the latency of read/write transactions that originate from a region other than the default leader region. ([6852d99](https://togithub.com/googleapis/nodejs-spanner/commit/6852d99b858eb323ac3fc5e61905b8bf59486062))

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

Author: release-please[bot]

CHANGELOG.md

@@ -4,6 +4,13 @@
 
 [1]: https://www.npmjs.com/package/nodejs-spanner?activeTab=versions
 
+## [6.15.0](https://github.com/googleapis/nodejs-spanner/compare/v6.14.0...v6.15.0) (2023-08-04)
+
+
+### Features
+
+* Enable leader aware routing by default. This update contains performance optimisations that will reduce the latency of read/write transactions that originate from a region other than the default leader region. ([6852d99](https://github.com/googleapis/nodejs-spanner/commit/6852d99b858eb323ac3fc5e61905b8bf59486062))
+
 ## [6.14.0](https://github.com/googleapis/nodejs-spanner/compare/v6.13.0...v6.14.0) (2023-07-21)
 
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@google-cloud/spanner",
   "description": "Cloud Spanner Client Library for Node.js",
-  "version": "6.14.0",
+  "version": "6.15.0",
   "license": "Apache-2.0",
   "author": "Google Inc.",
   "engines": {

samples/package.json

@@ -16,7 +16,7 @@
   "dependencies": {
     "@google-cloud/kms": "^3.0.0",
     "@google-cloud/precise-date": "^3.0.0",
-    "@google-cloud/spanner": "^6.14.0",
+    "@google-cloud/spanner": "^6.15.0",
     "yargs": "^17.0.0"
   },
   "devDependencies": {