Update CHANGELOG and CONTRIBUTING doc

CHANGELOG.md

@@ -4,6 +4,8 @@
 * [#417](https://github.com/slack-ruby/slack-ruby-client/pull/417): Raise rescuable errors - [@zachahn](https://github.com/zachahn).
 * [#419](https://github.com/slack-ruby/slack-ruby-client/pull/419): Use `rtm.connect` instead of `rtm.start` - [@kstole](https://github.com/kstole).
 * [#420](https://github.com/slack-ruby/slack-ruby-client/pull/420): Fix default store missing event hooks - [@kstole](https://github.com/kstole).
+* [#421](https://github.com/slack-ruby/slack-ruby-client/pull/421): Added `admin_audit_anomaly_allow_getItem`, `admin_audit_anomaly_allow_updateItem`, `files_completeUploadExternal`, `files_getUploadURLExternal` - [@kstole](https://github.com/kstole).
+* [#421](https://github.com/slack-ruby/slack-ruby-client/pull/421): Raise error for mutually exclusive required options in views methods - [@kstole](https://github.com/kstole).
 * Your contribution here.
 
 ### 1.1.0 (2022/06/05)

CONTRIBUTING.md

@@ -82,15 +82,16 @@ The broad steps are:
 2. Make a change to a generated file, for example `lib/slack/web/api/endpoints/chat.rb`.
 3. Generate a patch:
     ```
-    git diff --no-color HEAD lib/slack/web/api/endpoints/chat.rb > lib/slack/web/api/patches/chat.1.patch
+    git diff --no-color HEAD lib/slack/web/api/endpoints/chat.rb > lib/slack/web/api/patches/chat.added-support.patch
     ```
 4. Run `rake slack:api:update` to ensure that the patch is cleanly applied. Implement a test for the added or modified functionality and commit the patch file.
 
 ##### Resolving Patch Errors
 
 The auto-generated method files may drift overtime e.g. new arguments may be added or descriptions changed. Since previous patches were based on the older auto-generated files, git may be unable to apply them to the new files. Resolving them requires some good ol' splicing:
 1. Run `rake slack:api:update SKIP_PATCH=true` to create the raw auto-generated files. Commit the files that you are updating, so we can run `git diff` later.
-2. Go through the old patches for the files (e.g. in `lib/slack/web/api/patches/chat.1.patch`), copying code into the new files.
+2. Go through the old patches for the files (e.g. in `lib/slack/web/api/patches/chat.added-support.patch`), copying code into the new files.
+    - Run `git apply --reject path/to/patch-file.patch` to see hunks that couldn't be applied.
 3. Continue with Step 2 [above](#patching-slack-web-api).