deps: update dependency com.google.cloud:google-cloud-core to v2.8.10 (#1224)

[![Mend Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-core](https://togithub.com/googleapis/java-core) | `2.8.9` -> `2.8.10` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core/2.8.10/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core/2.8.10/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core/2.8.10/compatibility-slim/2.8.9)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core/2.8.10/confidence-slim/2.8.9)](https://docs.renovatebot.com/merge-confidence/) |

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Renovate will not automatically rebase this PR, because other commits have been found.

🔕 **Ignore**: Close this PR and you won't be reminded about these updates again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, click this checkbox. ⚠ **Warning**: custom changes will be lost.

---

This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://app.renovatebot.com/dashboard#github/googleapis/java-automl).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzMi4xNzQuMSIsInVwZGF0ZWRJblZlciI6IjMyLjE3NC4xIn0=-->

Author: renovate-bot

samples/install-without-bom/pom.xml

@@ -63,7 +63,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.8.9</version>
+      <version>2.8.10</version>
       <scope>test</scope>
       <classifier>tests</classifier>
     </dependency>

samples/snapshot/pom.xml

@@ -62,7 +62,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.8.9</version>
+      <version>2.8.10</version>
       <scope>test</scope>
       <classifier>tests</classifier>
     </dependency>

samples/snippets/pom.xml

@@ -71,7 +71,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.8.9</version>
+      <version>2.8.10</version>
       <scope>test</scope>
       <classifier>tests</classifier>
     </dependency>