chore: version bump to 2.40.0-rc (#15256)

Author: scotthart

CHANGELOG.md

@@ -4,6 +4,8 @@
 breaking changes in the upcoming 3.x release. This release is scheduled for
 2024-12 or 2025-01.
 
+## v2.40.0 - TBD
+
 ## v2.39.0 - 2025-07
 
 ### [Storage](/google/cloud/storage/README.md)

CMakeLists.txt

@@ -21,9 +21,9 @@ set(PACKAGE_BUGREPORT "https://github.com/googleapis/google-cloud-cpp/issues")
 
 project(
     google-cloud-cpp
-    VERSION 2.39.0
+    VERSION 2.40.0
     LANGUAGES CXX)
-set(PROJECT_VERSION_PRE_RELEASE "")
+set(PROJECT_VERSION_PRE_RELEASE "rc")
 
 if (NOT "${PROJECT_VERSION_PRE_RELEASE}" STREQUAL "")
     set(PROJECT_VERSION "${PROJECT_VERSION}-${PROJECT_VERSION_PRE_RELEASE}")

MODULE.bazel

@@ -16,7 +16,7 @@
 
 module(
     name = "google_cloud_cpp",
-    version = "2.39.0",  # Updated by CMake
+    version = "2.40.0-rc",  # Updated by CMake
     compatibility_level = 2,  # Updated by CMake
 )