chore: release 4.5.1 (#793)

* updated CHANGELOG.md [ci skip]

* updated package.json [ci skip]

* updated samples/package.json [ci skip]

Author: release-please[bot]

CHANGELOG.md

@@ -4,6 +4,13 @@
 
 [1]: https://www.npmjs.com/package/nodejs-spanner?activeTab=versions
 
+### [4.5.1](https://www.github.com/googleapis/nodejs-spanner/compare/v4.5.0...v4.5.1) (2020-01-08)
+
+
+### Bug Fixes
+
+* session pool should only create session if pending<=waiters ([#791](https://www.github.com/googleapis/nodejs-spanner/issues/791)) ([75345b1](https://www.github.com/googleapis/nodejs-spanner/commit/75345b18d37937b60a89c6b039c6b3a39b0ea6b7)), closes [#790](https://www.github.com/googleapis/nodejs-spanner/issues/790)
+
 ## [4.5.0](https://www.github.com/googleapis/nodejs-spanner/compare/v4.4.1...v4.5.0) (2020-01-06)
 
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@google-cloud/spanner",
   "description": "Cloud Spanner Client Library for Node.js",
-  "version": "4.5.0",
+  "version": "4.5.1",
   "license": "Apache-2.0",
   "author": "Google Inc.",
   "engines": {

samples/package.json

@@ -14,7 +14,7 @@
     "test": "mocha system-test --timeout 600000"
   },
   "dependencies": {
-    "@google-cloud/spanner": "^4.5.0",
+    "@google-cloud/spanner": "^4.5.1",
     "yargs": "^15.0.0"
   },
   "devDependencies": {