build(deps): bump com.diffplug.spotless:spotless-maven-plugin (#3540)

Bumps [com.diffplug.spotless:spotless-maven-plugin](https://github.com/diffplug/spotless) from 2.44.2 to 3.8.0.
- [Release notes](https://github.com/diffplug/spotless/releases)
- [Changelog](https://github.com/diffplug/spotless/blob/main/CHANGES.md)
- [Commits](https://github.com/diffplug/spotless/compare/maven/2.44.2...maven/3.8.0)

---
updated-dependencies:
- dependency-name: com.diffplug.spotless:spotless-maven-plugin
  dependency-version: 3.8.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

microservices-self-registration/contextservice/pom.xml

@@ -70,7 +70,7 @@
             <plugin>
                 <groupId>com.diffplug.spotless</groupId>
                 <artifactId>spotless-maven-plugin</artifactId>
-                <version>2.44.4</version>
+                <version>3.8.0</version>
                 <executions>
                     <execution>
                         <goals>

microservices-self-registration/eurekaserver/pom.xml

@@ -52,7 +52,7 @@
             <plugin>
                 <groupId>com.diffplug.spotless</groupId>
                 <artifactId>spotless-maven-plugin</artifactId>
-                <version>2.44.4</version>
+                <version>3.8.0</version>
                 <executions>
                     <execution>
                         <goals>

microservices-self-registration/greetingservice/pom.xml

@@ -66,7 +66,7 @@
             <plugin>
                 <groupId>com.diffplug.spotless</groupId>
                 <artifactId>spotless-maven-plugin</artifactId>
-                <version>2.44.4</version>
+                <version>3.8.0</version>
                 <executions>
                     <execution>
                         <goals>

pom.xml

@@ -491,7 +491,7 @@
       <plugin>
         <groupId>com.diffplug.spotless</groupId>
         <artifactId>spotless-maven-plugin</artifactId>
-        <version>2.44.4</version> <!-- Use latest version -->
+        <version>3.8.0</version> <!-- Use latest version -->
         <executions>
           <execution>
             <goals>

rate-limiting-pattern/pom.xml

@@ -59,7 +59,7 @@
             <plugin>
                 <groupId>com.diffplug.spotless</groupId>
                 <artifactId>spotless-maven-plugin</artifactId>
-                <version>2.44.2</version>
+                <version>3.8.0</version>
                 <executions>
                     <execution>
                         <goals>