chore(main): release 2.8.0 (#265)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
diff --git a/v2/.release-please-manifest.json b/v2/.release-please-manifest.json
index 1029563..b76fad0 100644
--- a/v2/.release-please-manifest.json
+++ b/v2/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    "v2": "2.7.1"
+    "v2": "2.8.0"
 }
diff --git a/v2/CHANGES.md b/v2/CHANGES.md
index 41a7ca9..456953d 100644
--- a/v2/CHANGES.md
+++ b/v2/CHANGES.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.8.0](https://github.com/googleapis/gax-go/compare/v2.7.1...v2.8.0) (2023-03-15)
+
+
+### Features
+
+* **v2:** add WithTimeout option ([#259](https://github.com/googleapis/gax-go/issues/259)) ([9a8da43](https://github.com/googleapis/gax-go/commit/9a8da43693002448b1e8758023699387481866d1))
+
 ## [2.7.1](https://github.com/googleapis/gax-go/compare/v2.7.0...v2.7.1) (2023-03-06)
 
 
diff --git a/v2/internal/version.go b/v2/internal/version.go
index 936873e..b4a8ba9 100644
--- a/v2/internal/version.go
+++ b/v2/internal/version.go
@@ -30,4 +30,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "2.7.1"
+const Version = "2.8.0"