chore(deps): update dependency google-cloud-pubsublite to v1.2.0 (GoogleCloudPlatform#6701)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [google-cloud-pubsublite](https://togithub.com/googleapis/python-pubsublite) | `==1.1.0` -> `==1.2.0` | [![age](https://badges.renovateapi.com/packages/pypi/google-cloud-pubsublite/1.2.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/google-cloud-pubsublite/1.2.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/google-cloud-pubsublite/1.2.0/compatibility-slim/1.1.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/google-cloud-pubsublite/1.2.0/confidence-slim/1.1.0)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>googleapis/python-pubsublite</summary>

### [`v1.2.0`](https://togithub.com/googleapis/python-pubsublite/blob/master/CHANGELOG.md#&#8203;120-httpswwwgithubcomgoogleapispython-pubsublitecomparev114v120-2021-09-15)

[Compare Source](https://togithub.com/googleapis/python-pubsublite/compare/v1.1.4...v1.2.0)

##### Features

-   Add cloud region path handling for when this is allowed by the backend ([#&GoogleCloudPlatform#8203;240](https://www.togithub.com/googleapis/python-pubsublite/issues/240)) ([4cad460](https://www.github.com/googleapis/python-pubsublite/commit/4cad4603e7d24037b401259be9ebcd116984f7c8))

##### [1.1.4](https://www.github.com/googleapis/python-pubsublite/compare/v1.1.3...v1.1.4) (2021-09-14)

##### Bug Fixes

-   Race conditions and performance issues ([#&GoogleCloudPlatform#8203;237](https://www.togithub.com/googleapis/python-pubsublite/issues/237)) ([ec76272](https://www.github.com/googleapis/python-pubsublite/commit/ec7627295bbd26a4ac910f88f4dadc5492b48fa3))

##### [1.1.3](https://www.github.com/googleapis/python-pubsublite/compare/v1.1.2...v1.1.3) (2021-09-13)

##### Bug Fixes

-   ensure ack() doesn't wait on stream messages ([#&GoogleCloudPlatform#8203;234](https://www.togithub.com/googleapis/python-pubsublite/issues/234)) ([03db702](https://www.github.com/googleapis/python-pubsublite/commit/03db702c1f88982ed424bec3d99ae9d4bdc353bd))

##### [1.1.2](https://www.github.com/googleapis/python-pubsublite/compare/v1.1.1...v1.1.2) (2021-09-13)

##### Bug Fixes

-   Enable pytype on Pub/Sub Lite repo and fix all errors ([#&GoogleCloudPlatform#8203;214](https://www.togithub.com/googleapis/python-pubsublite/issues/214)) ([df58fdf](https://www.github.com/googleapis/python-pubsublite/commit/df58fdfc83bdc4f6f753f664365a0ff26d3201e7))
-   performance issues with subscriber client ([#&GoogleCloudPlatform#8203;232](https://www.togithub.com/googleapis/python-pubsublite/issues/232)) ([78a47b2](https://www.github.com/googleapis/python-pubsublite/commit/78a47b2817bee4a468f8ce15fe437165be1d1458))

##### [1.1.1](https://www.github.com/googleapis/python-pubsublite/compare/v1.1.0...v1.1.1) (2021-09-07)

##### Bug Fixes

-   Add workaround for [https://github.com/grpc/grpc/issues/25364](https://togithub.com/grpc/grpc/issues/25364) ([#&GoogleCloudPlatform#8203;213](https://www.togithub.com/googleapis/python-pubsublite/issues/213)) ([e417bf3](https://www.github.com/googleapis/python-pubsublite/commit/e417bf39fe32c995e5ac2e0a807a10fee3f37d9f))
-   Numerous small performance and correctness issues ([#&GoogleCloudPlatform#8203;211](https://www.togithub.com/googleapis/python-pubsublite/issues/211)) ([358a1d8](https://www.github.com/googleapis/python-pubsublite/commit/358a1d8a429086ee75373260eb087a9dd171e3e6))

### [`v1.1.4`](https://togithub.com/googleapis/python-pubsublite/blob/master/CHANGELOG.md#&#8203;114-httpswwwgithubcomgoogleapispython-pubsublitecomparev113v114-2021-09-14)

[Compare Source](https://togithub.com/googleapis/python-pubsublite/compare/v1.1.3...v1.1.4)

### [`v1.1.3`](https://togithub.com/googleapis/python-pubsublite/blob/master/CHANGELOG.md#&#8203;113-httpswwwgithubcomgoogleapispython-pubsublitecomparev112v113-2021-09-13)

[Compare Source](https://togithub.com/googleapis/python-pubsublite/compare/v1.1.2...v1.1.3)

### [`v1.1.2`](https://togithub.com/googleapis/python-pubsublite/blob/master/CHANGELOG.md#&#8203;112-httpswwwgithubcomgoogleapispython-pubsublitecomparev111v112-2021-09-13)

[Compare Source](https://togithub.com/googleapis/python-pubsublite/compare/v1.1.1...v1.1.2)

### [`v1.1.1`](https://togithub.com/googleapis/python-pubsublite/blob/master/CHANGELOG.md#&#8203;111-httpswwwgithubcomgoogleapispython-pubsublitecomparev110v111-2021-09-07)

[Compare Source](https://togithub.com/googleapis/python-pubsublite/compare/v1.1.0...v1.1.1)

</details>

---

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pubsublite/spark-connector/requirements-test.txt

@@ -1,4 +1,4 @@
 google-cloud-dataproc==2.5.0
-google-cloud-pubsublite==1.1.0
+google-cloud-pubsublite==1.2.0
 google-cloud-storage==1.42.1
 pytest==6.2.5