chore(deps): update dependency google-cloud-language to v2.1.0 (#130)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [google-cloud-language](https://togithub.com/googleapis/python-language) | `==2.0.0` -> `==2.1.0` | [![age](https://badges.renovateapi.com/packages/pypi/google-cloud-language/2.1.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/google-cloud-language/2.1.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/google-cloud-language/2.1.0/compatibility-slim/2.0.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/google-cloud-language/2.1.0/confidence-slim/2.0.0)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

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

### [`v2.1.0`](https://togithub.com/googleapis/python-language/blob/master/CHANGELOG.md#&#8203;210-httpswwwgithubcomgoogleapispython-languagecomparev140v210-2021-06-16)

[Compare Source](https://togithub.com/googleapis/python-language/compare/v2.0.0...v2.1.0)

##### Features

-   add 'from_service_account_info' factory to clients ([cc8a180](https://www.github.com/googleapis/python-language/commit/cc8a18032af7c8d8bf45130898eeae7efb17a91e))
-   add common resource helper methods; expose client transport ([#&#8203;55](https://www.github.com/googleapis/python-language/issues/55)) ([8dde55c](https://www.github.com/googleapis/python-language/commit/8dde55cdd0e956c333039c0b74e49a06dd6ad33b))
-   add from_service_account_info factory and fix sphinx identifiers  ([#&#8203;66](https://www.github.com/googleapis/python-language/issues/66)) ([cc8a180](https://www.github.com/googleapis/python-language/commit/cc8a18032af7c8d8bf45130898eeae7efb17a91e))
-   support self-signed JWT flow for service accounts ([0dcb15e](https://www.github.com/googleapis/python-language/commit/0dcb15eb46b60bd816a6919464be1331c2c8de41))

##### Bug Fixes

-   add async client to %name\_%version/init.py ([0dcb15e](https://www.github.com/googleapis/python-language/commit/0dcb15eb46b60bd816a6919464be1331c2c8de41))
-   adds underscore to "type" to NL API samples ([#&#8203;49](https://www.github.com/googleapis/python-language/issues/49)) ([36aa320](https://www.github.com/googleapis/python-language/commit/36aa320bf3e0018d66a7d0c91ce4733f20e9acc0))
-   **deps:** add packaging requirement ([#&#8203;113](https://www.github.com/googleapis/python-language/issues/113)) ([7e711ac](https://www.github.com/googleapis/python-language/commit/7e711ac63c95c1018d24c7c4db3bc02c191efcfc))
-   fix sphinx identifiers ([cc8a180](https://www.github.com/googleapis/python-language/commit/cc8a18032af7c8d8bf45130898eeae7efb17a91e))
-   remove client recv msg limit fix: add enums to `types/__init__.py` ([#&#8203;62](https://www.github.com/googleapis/python-language/issues/62)) ([3476c0f](https://www.github.com/googleapis/python-language/commit/3476c0f72529cbcbe61ea5c7e6a22291777bed7e))
-   use correct retry deadlines ([#&#8203;83](https://www.github.com/googleapis/python-language/issues/83)) ([e2be2d8](https://www.github.com/googleapis/python-language/commit/e2be2d8ecf849940f2ea066655fda3bee68d8a74))

##### Documentation

-   fix typos ([#&#8203;125](https://www.github.com/googleapis/python-language/issues/125)) ([788176f](https://www.github.com/googleapis/python-language/commit/788176feff5fb541e0d16f236b10b765d04ecb98))

##### Miscellaneous Chores

-   release as 2.1.0 ([#&#8203;126](https://www.github.com/googleapis/python-language/issues/126)) ([92fa7f9](https://www.github.com/googleapis/python-language/commit/92fa7f995013c302f3bd3eb6bec53d92d8d9990c))

</details>

---

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language/snippets/classify_text/requirements.txt

@@ -1,3 +1,3 @@
-google-cloud-language==2.0.0
+google-cloud-language==2.1.0
 numpy==1.20.1; python_version > '3.6'
 numpy==1.19.5; python_version <= '3.6'

language/snippets/cloud-client/v1/requirements.txt

@@ -1 +1 @@
-google-cloud-language==2.0.0
+google-cloud-language==2.1.0

language/snippets/generated-samples/v1/requirements.txt

@@ -1 +1 @@
-google-cloud-language==2.0.0
+google-cloud-language==2.1.0

language/snippets/sentiment/requirements.txt

@@ -1 +1 @@
-google-cloud-language==2.0.0
+google-cloud-language==2.1.0