fix(deps): update dependency com.google.cloud:google-cloud-apigee-reg…

…istry-parent to v0.3.0 (googleapis#8262)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-apigee-registry-parent](https://togithub.com/googleapis/java-apigee-registry) | `0.2.3-SNAPSHOT` -> `0.3.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-apigee-registry-parent/0.3.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-apigee-registry-parent/0.3.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-apigee-registry-parent/0.3.0/compatibility-slim/0.2.3-SNAPSHOT)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-apigee-registry-parent/0.3.0/confidence-slim/0.2.3-SNAPSHOT)](https://docs.renovatebot.com/merge-confidence/) |

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java-apigee-registry/google-cloud-apigee-registry/pom.xml

@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-apigee-registry-parent</artifactId>
-    <version>0.2.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-apigee-registry:current} -->
+    <version>0.3.0</version><!-- {x-version-update:google-cloud-apigee-registry:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-apigee-registry</site.installationModule>

java-apigee-registry/grpc-google-cloud-apigee-registry-v1/pom.xml

@@ -10,7 +10,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-apigee-registry-parent</artifactId>
-    <version>0.2.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-apigee-registry:current} -->
+    <version>0.3.0</version><!-- {x-version-update:google-cloud-apigee-registry:current} -->
   </parent>
   <dependencies>
     <dependency>

java-apigee-registry/proto-google-cloud-apigee-registry-v1/pom.xml

@@ -10,7 +10,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-apigee-registry-parent</artifactId>
-    <version>0.2.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-apigee-registry:current} -->
+    <version>0.3.0</version><!-- {x-version-update:google-cloud-apigee-registry:current} -->
   </parent>
   <dependencies>
     <dependency>