chore(release): update changelog for 2021-10 release (#7386)

Author: devbww

CHANGELOG.md

@@ -67,7 +67,27 @@
   details.
 </details>
 
-## v1.32.0 - TBD
+## v1.33.0 - TBD
+
+## v1.32.0 - 2021-10
+
+### [Bigtable](https://github.com/googleapis/google-cloud-cpp/blob/main/google/cloud/bigtable/README.md)
+
+* docs(bigtable): add documentation for no channel refreshes ([#7373](https://github.com/googleapis/google-cloud-cpp/pull/7373))
+
+### [IAM](https://github.com/googleapis/google-cloud-cpp/blob/main/google/cloud/iam/README.md)
+
+* feat(generator): generate a SetIamPolicy() overload with an OCC loop ([#7276](https://github.com/googleapis/google-cloud-cpp/pull/7276))
+* doc(iam): use SetIamPolicy() read-modify-write loop in sample ([#7288](https://github.com/googleapis/google-cloud-cpp/pull/7288))
+
+### [Pub/Sub](https://github.com/googleapis/google-cloud-cpp/blob/main/google/cloud/pubsub/README.md)
+
+* feat(pubsub): use `google::cloud::Options` to configure the library.
+  `pubsub::PublisherOptions`, `pubsub::SubscriberOptions`, and related
+  functions are deprecated. We have not set a date to remove them, but if
+  we ever do we plan to give you one year's notice.
+* fix(pubsub): avoid deadlocks in publish flow control ([#7313](https://github.com/googleapis/google-cloud-cpp/pull/7313))
+* fix(pubsub): dont std::move PublisherOptions that we are still using ([#7270](https://github.com/googleapis/google-cloud-cpp/pull/7270))
 
 ### [Storage](https://github.com/googleapis/google-cloud-cpp/blob/main/google/cloud/storage/README.md)
 
@@ -79,6 +99,32 @@
   clearly labeled `experimental`.  Regardless, we apologize if this causes you
   inconvenience or additional work.
 
+**OTHER CHANGES**:
+
+* fix(storage): eliminate dangling function references ([#7366](https://github.com/googleapis/google-cloud-cpp/pull/7366))
+* doc: add gRPC steps to storage quickstart ([#7358](https://github.com/googleapis/google-cloud-cpp/pull/7358))
+* fix(storage): restore deprecation warnings on MSVC ([#7325](https://github.com/googleapis/google-cloud-cpp/pull/7325))
+* fix(storage): build with MSVC+x86 ([#7323](https://github.com/googleapis/google-cloud-cpp/pull/7323))
+* feat(GCS+gRPC): reduce data copying in downloads ([#7303](https://github.com/googleapis/google-cloud-cpp/pull/7303))
+* feat(GCS+gRPC): support timeouts for all requests ([#7299](https://github.com/googleapis/google-cloud-cpp/pull/7299))
+* feat(storage): support timeouts for all requests ([#7295](https://github.com/googleapis/google-cloud-cpp/pull/7295))
+* feat(storage): use generic parameters when resuming uploads ([#7292](https://github.com/googleapis/google-cloud-cpp/pull/7292))
+* feat(GCS+gRPC): implement standard parameters ([#7272](https://github.com/googleapis/google-cloud-cpp/pull/7272))
+* fix(storage): use CA info options in credentials ([#7261](https://github.com/googleapis/google-cloud-cpp/pull/7261))
+* doc(storage): handle kNotFound in example ([#7252](https://github.com/googleapis/google-cloud-cpp/pull/7252))
+
+### [Spanner](https://github.com/googleapis/google-cloud-cpp/blob/main/google/cloud/spanner/README.md)
+
+* feat(generator): generate a SetIamPolicy() overload with an OCC loop ([#7276](https://github.com/googleapis/google-cloud-cpp/pull/7276))
+* feat(spanner): add factory functions for instance/database/backup ([#7321](https://github.com/googleapis/google-cloud-cpp/pull/7321))
+* doc(spanner): convert Spanner samples to use the generated admin APIs ([#7311](https://github.com/googleapis/google-cloud-cpp/pull/7311))
+* feat(spanner): add generated admin APIs ([#7285](https://github.com/googleapis/google-cloud-cpp/pull/7285))
+
+### [Common Libraries](https://github.com/googleapis/google-cloud-cpp/blob/main/google/cloud/README.md)
+
+* fix: substitute build metadata (git commit) in bazel builds ([#7378](https://github.com/googleapis/google-cloud-cpp/pull/7378))
+* feat(common): add ability to supply a user-run CQ to gRPC options ([#7354](https://github.com/googleapis/google-cloud-cpp/pull/7354))
+
 ## v1.31.1 - 2021-09
 
 ### [Storage](https://github.com/googleapis/google-cloud-cpp/blob/main/google/cloud/storage/README.md)