doc: update CHANGELOG and version numbers for v1.31.1 (#7265)

Author: coryan

CHANGELOG.md

@@ -54,6 +54,12 @@
 
 ## v1.32.0 - TBD
 
+## v1.31.1 - 2021-09
+
+### [Storage](https://github.com/googleapis/google-cloud-cpp/blob/main/google/cloud/storage/README.md)
+
+* fix(storage): use CA info options in credentials ([#7263](https://github.com/googleapis/google-cloud-cpp/pull/7263))
+
 ## v1.31.0 - 2021-09
 
 ### [BigQuery](https://github.com/googleapis/google-cloud-cpp/blob/main/google/cloud/bigquery/README.md)

CMakeLists.txt

@@ -25,7 +25,7 @@ if (NOT (CMAKE_VERSION VERSION_LESS 3.15))
 endif ()
 project(
     google-cloud-cpp
-    VERSION 1.31.0
+    VERSION 1.31.1
     LANGUAGES CXX C)
 
 # Configure the Compiler options, we use C++11 features by default.

google/cloud/internal/version_info.h

@@ -17,6 +17,6 @@
 
 #define GOOGLE_CLOUD_CPP_VERSION_MAJOR 1
 #define GOOGLE_CLOUD_CPP_VERSION_MINOR 31
-#define GOOGLE_CLOUD_CPP_VERSION_PATCH 0
+#define GOOGLE_CLOUD_CPP_VERSION_PATCH 1
 
 #endif  // GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_INTERNAL_VERSION_INFO_H