build: upgrade Java microgenerator to v2.2.1 (#209)

* build: upgrade Java microgenerator to v2.2.1

# v2.2.1

## Bug Fixes
- gax batching regression (#863) (3a6f168)

# v2.2.0

## Features
- Add REST AIP-151 LRO suport (cb1b534)
- enable self signed JWT for http (#850) (aba0ec0)
- Implement DIREGAPIC LRO annotations (#832) (d7b29e0)
- REGAPIC initial implementation (#824) (fdcfe70)
- REGAPIC Multitransport implementation (grpc+rest) (#833) (445daf4)

## Bug Fixes
- [bazel] fix rest transport handling in assembly rule (#835) (92f7c1c)
- DIREGAPIC LRO generated tests logic (#838) (8ae8e6f)
- fix diregapic-lro logic (#834) (957f69a)

PiperOrigin-RevId: 405492216

Source-Link: googleapis/googleapis@4381242

Source-Link: googleapis/googleapis-gen@8d1ecc7
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiOGQxZWNjNzMwMDlkOTQ5ODAzZmUxNzQ1ZjQ2MTc1NDZhOGNiNzRmYyJ9

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

google-cloud-channel/src/main/java/com/google/cloud/channel/v1/CloudChannelServiceClient.java

@@ -48,7 +48,7 @@
  * admin access. 3. Resellers and distributors can manage customer entitlements.
  *
  * <p>CloudChannelService exposes the following resources: -
- * [Customer][google.cloud.channel.v1.Customer]s: An entity?usually an enterprise?managed by a
+ * [Customer][google.cloud.channel.v1.Customer]s: An entity—usually an enterprise—managed by a
  * reseller or distributor.
  *
  * <p>- [Entitlement][google.cloud.channel.v1.Entitlement]s: An entity that provides a customer with

google-cloud-channel/src/main/java/com/google/cloud/channel/v1/package-info.java

@@ -27,7 +27,7 @@
  * admin access. 3. Resellers and distributors can manage customer entitlements.
  *
  * <p>CloudChannelService exposes the following resources: -
- * [Customer][google.cloud.channel.v1.Customer]s: An entity?usually an enterprise?managed by a
+ * [Customer][google.cloud.channel.v1.Customer]s: An entity—usually an enterprise—managed by a
  * reseller or distributor.
  *
  * <p>- [Entitlement][google.cloud.channel.v1.Entitlement]s: An entity that provides a customer with