build(deps): update dependency com.google.cloud:google-cloud-shared-c…

…onfig to v1.0.3 (#1017)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-shared-config](https://github.com/googleapis/java-shared-config) | `1.0.2` -> `1.0.3` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.0.3/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.0.3/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.0.3/compatibility-slim/1.0.2)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.0.3/confidence-slim/1.0.2)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>googleapis/java-shared-config</summary>

### [`v1.0.3`](https://github.com/googleapis/java-shared-config/blob/master/CHANGELOG.md#&#8203;103-httpswwwgithubcomgoogleapisjava-shared-configcomparev102v103-2021-09-21)

[Compare Source](https://github.com/googleapis/java-shared-config/compare/v1.0.2...v1.0.3)

</details>

---

### Configuration

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google-cloud-bigtable-bom/pom.xml

@@ -8,7 +8,7 @@
     <parent>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-shared-config</artifactId>
-        <version>1.0.2</version>
+        <version>1.0.3</version>
     </parent>
 
     <name>Google Cloud Bigtable BOM</name>

google-cloud-bigtable-deps-bom/pom.xml

@@ -7,7 +7,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-shared-config</artifactId>
-    <version>1.0.2</version>
+    <version>1.0.3</version>
   </parent>
 
   <groupId>com.google.cloud</groupId>

pom.xml

@@ -14,7 +14,7 @@
     <parent>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-shared-config</artifactId>
-        <version>1.0.2</version>
+        <version>1.0.3</version>
     </parent>
 
     <developers>