deps: update spring.version to v2.7.3 (#974)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [org.springframework.boot:spring-boot-maven-plugin](https://spring.io/projects/spring-boot) ([source](https://togithub.com/spring-projects/spring-boot)) | `2.7.2` -> `2.7.3` | [![age](https://badges.renovateapi.com/packages/maven/org.springframework.boot:spring-boot-maven-plugin/2.7.3/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/org.springframework.boot:spring-boot-maven-plugin/2.7.3/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/org.springframework.boot:spring-boot-maven-plugin/2.7.3/compatibility-slim/2.7.2)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/org.springframework.boot:spring-boot-maven-plugin/2.7.3/confidence-slim/2.7.2)](https://docs.renovatebot.com/merge-confidence/) |
| [org.springframework.boot:spring-boot-starter-thymeleaf](https://spring.io/projects/spring-boot) ([source](https://togithub.com/spring-projects/spring-boot)) | `2.7.2` -> `2.7.3` | [![age](https://badges.renovateapi.com/packages/maven/org.springframework.boot:spring-boot-starter-thymeleaf/2.7.3/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/org.springframework.boot:spring-boot-starter-thymeleaf/2.7.3/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/org.springframework.boot:spring-boot-starter-thymeleaf/2.7.3/compatibility-slim/2.7.2)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/org.springframework.boot:spring-boot-starter-thymeleaf/2.7.3/confidence-slim/2.7.2)](https://docs.renovatebot.com/merge-confidence/) |
| [org.springframework.boot:spring-boot-starter-web](https://spring.io/projects/spring-boot) ([source](https://togithub.com/spring-projects/spring-boot)) | `2.7.2` -> `2.7.3` | [![age](https://badges.renovateapi.com/packages/maven/org.springframework.boot:spring-boot-starter-web/2.7.3/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/org.springframework.boot:spring-boot-starter-web/2.7.3/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/org.springframework.boot:spring-boot-starter-web/2.7.3/compatibility-slim/2.7.2)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/org.springframework.boot:spring-boot-starter-web/2.7.3/confidence-slim/2.7.2)](https://docs.renovatebot.com/merge-confidence/) |

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samples/spring-framework/pom.xml

@@ -19,7 +19,7 @@ limitations under the License.
   <properties>
     <maven.compiler.target>1.8</maven.compiler.target>
     <maven.compiler.source>1.8</maven.compiler.source>
-    <spring.version>2.7.2</spring.version>
+    <spring.version>2.7.3</spring.version>
   </properties>
 
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