Bump the grpcio group across 4 directories with 5 updates

Bumps the grpcio group with 1 update in the / directory: [grpcio](https://github.com/grpc/grpc).
Bumps the grpcio group with 1 update in the /test directory: [grpcio](https://github.com/grpc/grpc).
Bumps the grpcio group with 5 updates in the /test/environment directory:

| Package | From | To |
| --- | --- | --- |
| [grpcio](https://github.com/grpc/grpc) | `1.65.4` | `1.66.1` |
| [grpcio-health-checking](https://grpc.io) | `1.65.4` | `1.66.1` |
| [grpcio-reflection](https://grpc.io) | `1.65.4` | `1.66.1` |
| [grpcio-testing](https://grpc.io) | `1.65.4` | `1.66.1` |
| [grpcio-tools](https://github.com/grpc/grpc) | `1.65.4` | `1.66.1` |

Bumps the grpcio group with 5 updates in the /test/environment/grpc directory:

| Package | From | To |
| --- | --- | --- |
| [grpcio](https://github.com/grpc/grpc) | `1.65.4` | `1.66.1` |
| [grpcio-health-checking](https://grpc.io) | `1.65.4` | `1.66.1` |
| [grpcio-reflection](https://grpc.io) | `1.65.4` | `1.66.1` |
| [grpcio-testing](https://grpc.io) | `1.65.4` | `1.66.1` |
| [grpcio-tools](https://github.com/grpc/grpc) | `1.65.4` | `1.66.1` |



Updates `grpcio` from 1.65.4 to 1.66.1
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.65.4...v1.66.1)

Updates `grpcio` from 1.65.4 to 1.66.1
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.65.4...v1.66.1)

Updates `grpcio` from 1.65.4 to 1.66.1
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.65.4...v1.66.1)

Updates `grpcio-health-checking` from 1.65.4 to 1.66.1

Updates `grpcio-reflection` from 1.65.4 to 1.66.1

Updates `grpcio-testing` from 1.65.4 to 1.66.1

Updates `grpcio-tools` from 1.65.4 to 1.66.1
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.65.4...v1.66.1)

Updates `grpcio` from 1.65.4 to 1.66.1
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.65.4...v1.66.1)

Updates `grpcio-health-checking` from 1.65.4 to 1.66.1

Updates `grpcio-reflection` from 1.65.4 to 1.66.1

Updates `grpcio-testing` from 1.65.4 to 1.66.1

Updates `grpcio-tools` from 1.65.4 to 1.66.1
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.65.4...v1.66.1)

---
updated-dependencies:
- dependency-name: grpcio
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpcio
- dependency-name: grpcio
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpcio
- dependency-name: grpcio
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpcio
- dependency-name: grpcio-health-checking
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpcio
- dependency-name: grpcio-reflection
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpcio
- dependency-name: grpcio-testing
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpcio
- dependency-name: grpcio-tools
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpcio
- dependency-name: grpcio
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpcio
- dependency-name: grpcio-health-checking
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpcio
- dependency-name: grpcio-reflection
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpcio
- dependency-name: grpcio-testing
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpcio
- dependency-name: grpcio-tools
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: grpcio
...

Signed-off-by: dependabot[bot] <[email protected]>

test/environment/grpc/requirements.txt

@@ -1,5 +1,5 @@
-grpcio==1.65.4
-grpcio-health-checking==1.65.4
-grpcio-reflection==1.65.4
-grpcio-testing==1.65.4
-grpcio-tools==1.65.4
+grpcio==1.66.1
+grpcio-health-checking==1.66.1
+grpcio-reflection==1.66.1
+grpcio-testing==1.66.1
+grpcio-tools==1.66.1

test/requirements.ci.txt

@@ -1,5 +1,5 @@
 docker==7.1.0
-grpcio==1.65.4
+grpcio==1.66.1
 protobuf==5.28.0
 requests==2.32.3
 urllib3==2.2.2