chore(deps): update dependency google-cloud-vision to v2.3.2 (#160)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [google-cloud-vision](https://togithub.com/googleapis/python-vision) | `==2.3.1` -> `==2.3.2` | [![age](https://badges.renovateapi.com/packages/pypi/google-cloud-vision/2.3.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/google-cloud-vision/2.3.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/google-cloud-vision/2.3.2/compatibility-slim/2.3.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/google-cloud-vision/2.3.2/confidence-slim/2.3.1)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v2.3.2`](https://togithub.com/googleapis/python-vision/blob/master/CHANGELOG.md#&#8203;232-httpswwwgithubcomgoogleapispython-visioncomparev231v232-2021-06-02)

[Compare Source](https://togithub.com/googleapis/python-vision/compare/v2.3.1...v2.3.2)

</details>

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samples/snippets/crop_hints/requirements.txt

@@ -1,2 +1,2 @@
-google-cloud-vision==2.3.1
+google-cloud-vision==2.3.2
 pillow==8.2.0

samples/snippets/detect/requirements.txt

@@ -1,2 +1,2 @@
-google-cloud-vision==2.3.1
+google-cloud-vision==2.3.2
 google-cloud-storage==1.38.0

samples/snippets/document_text/requirements.txt

@@ -1,2 +1,2 @@
-google-cloud-vision==2.3.1
+google-cloud-vision==2.3.2
 pillow==8.2.0

samples/snippets/face_detection/requirements.txt

@@ -1,2 +1,2 @@
-google-cloud-vision==2.3.1
+google-cloud-vision==2.3.2
 pillow==8.2.0

samples/snippets/product_search/requirements.txt

@@ -1,2 +1,2 @@
-google-cloud-vision==2.3.1
+google-cloud-vision==2.3.2
 google-cloud-storage==1.38.0

samples/snippets/quickstart/requirements.txt

@@ -1 +1 @@
-google-cloud-vision==2.3.1
+google-cloud-vision==2.3.2

samples/snippets/web/requirements.txt

@@ -1 +1 @@
-google-cloud-vision==2.3.1
+google-cloud-vision==2.3.2