Revert "dependency updates"

This reverts commit 168ab49.

multibanking-server/pom.xml

@@ -103,22 +103,18 @@
  <dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-hateoas</artifactId>
- <version>3.1.2</version>
  </dependency>
  <dependency>
  <groupId>org.apache.httpcomponents</groupId>
  <artifactId>httpclient</artifactId>
- <version>4.5.14</version>
  </dependency>
  <dependency>
  <groupId>com.fasterxml.jackson.datatype</groupId>
  <artifactId>jackson-datatype-jsr310</artifactId>
- <version>2.15.2</version>
  </dependency>
  <dependency>
  <groupId>com.fasterxml.jackson.dataformat</groupId>
  <artifactId>jackson-dataformat-yaml</artifactId>
- <version>2.15.0</version>
  </dependency>
 
  <dependency>

onlinebanking-bankinggateway/pom.xml

@@ -89,7 +89,6 @@
  <dependency>
  <groupId>javax.annotation</groupId>
  <artifactId>javax.annotation-api</artifactId>
- <version>1.3.2</version>
  </dependency>
 
  <!-- test -->

pom.xml

@@ -31,13 +31,13 @@
  </developers>
 
  <properties>
- <spring-boot.version>3.1.2</spring-boot.version>
+ <spring-boot.version>2.1.18.RELEASE</spring-boot.version>
  <org.mapstruct.version>1.4.1.Final</org.mapstruct.version>
  <lombok.version>1.18.16</lombok.version>
  <swagger-annotations.version>2.1.1</swagger-annotations.version>
  <junit.version>4.13.2</junit.version>
 
- <java.version>17</java.version>
+ <java.version>11</java.version>
  <maven.compiler.source>${java.version}</maven.compiler.source>
  <maven.compiler.target>${java.version}</maven.compiler.target>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -103,7 +103,7 @@
  <dependency>
  <groupId>org.iban4j</groupId>
  <artifactId>iban4j</artifactId>
- <version>3.2.3-RELEASE</version>
+ <version>3.2.1</version>
  </dependency>
 
  <dependency>
@@ -328,7 +328,7 @@
  <plugin>
  <groupId>org.sonatype.plugins</groupId>
  <artifactId>nexus-staging-maven-plugin</artifactId>
- <version>1.6.13</version>
+ <version>1.6.8</version>
  <extensions>true</extensions>
  <configuration>
  <serverId>sonatype</serverId>
@@ -350,7 +350,7 @@
  <plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-gpg-plugin</artifactId>
- <version>3.0.1</version>
+ <version>1.6</version>
  <configuration>
  </configuration>
  <executions>
@@ -371,6 +371,9 @@
  </plugin>
  <plugin>
  <artifactId>maven-javadoc-plugin</artifactId>
+ <configuration>
+ <additionalparam>-Xdoclint:none</additionalparam>
+ </configuration>
  <executions>
  <execution>
  <id>attach-javadocs</id>