chore: release storage 1.13.0 (#3434)

🤖 I have created a release \*beep\* \*boop\* 
---
## [1.13.0](https://www.github.com/googleapis/google-cloud-go/compare/storage/v1.12.0...v1.13.0) (2021-02-03)


### Features

* **storage:** add missing StorageClass in BucketAttrsToUpdate ([#3038](https://www.github.com/googleapis/google-cloud-go/issues/3038)) ([2fa1b72](https://www.github.com/googleapis/google-cloud-go/commit/2fa1b727f8a7b20aa62fe0990530744f6c109be0))
* **storage:** add projection parameter for BucketHandle.Objects() ([#3549](https://www.github.com/googleapis/google-cloud-go/issues/3549)) ([9b9c3dc](https://www.github.com/googleapis/google-cloud-go/commit/9b9c3dce3ee10af5b6c4d070821bf47a861efd5b))


### Bug Fixes

* **storage:** fix endpoint selection logic ([#3172](https://www.github.com/googleapis/google-cloud-go/issues/3172)) ([99edf0d](https://www.github.com/googleapis/google-cloud-go/commit/99edf0d211a9e617f2586fbc83b6f9630da3c537))

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

storage/CHANGES.md

@@ -1,5 +1,18 @@
 # Changes
 
+## [1.13.0](https://www.github.com/googleapis/google-cloud-go/compare/storage/v1.12.0...v1.13.0) (2021-02-03)
+
+
+### Features
+
+* **storage:** add missing StorageClass in BucketAttrsToUpdate ([#3038](https://www.github.com/googleapis/google-cloud-go/issues/3038)) ([2fa1b72](https://www.github.com/googleapis/google-cloud-go/commit/2fa1b727f8a7b20aa62fe0990530744f6c109be0))
+* **storage:** add projection parameter for BucketHandle.Objects() ([#3549](https://www.github.com/googleapis/google-cloud-go/issues/3549)) ([9b9c3dc](https://www.github.com/googleapis/google-cloud-go/commit/9b9c3dce3ee10af5b6c4d070821bf47a861efd5b))
+
+
+### Bug Fixes
+
+* **storage:** fix endpoint selection logic ([#3172](https://www.github.com/googleapis/google-cloud-go/issues/3172)) ([99edf0d](https://www.github.com/googleapis/google-cloud-go/commit/99edf0d211a9e617f2586fbc83b6f9630da3c537))
+
 ## v1.12.0
 - V4 signed URL fixes:
   - Fix encoding of spaces in query parameters.