build(deps): update dependency com.google.cloud:google-cloud-shared-config to v1.5.0 (#968)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-shared-config](https://togithub.com/googleapis/java-shared-config) | `1.4.0` -> `1.5.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.5.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.5.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.5.0/compatibility-slim/1.4.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.5.0/confidence-slim/1.4.0)](https://docs.renovatebot.com/merge-confidence/) |

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Author: renovate-bot

README.md

@@ -49,7 +49,7 @@ If you are using Maven without BOM, add this to your dependencies:
 If you are using Gradle 5.x or later, add this to your dependencies
 
 ```Groovy
-implementation platform('com.google.cloud:libraries-bom:25.3.0')
+implementation platform('com.google.cloud:libraries-bom:25.4.0')
 
 implementation 'com.google.cloud:google-cloud-firestore'
 ```

google-cloud-firestore-bom/pom.xml

@@ -8,7 +8,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-shared-config</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
 
   <name>Google Cloud Firestore BOM</name>

pom.xml

@@ -14,7 +14,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-shared-config</artifactId>
-    <version>1.4.0</version>
+    <version>1.5.0</version>
   </parent>
 
   <developers>