Bump org.apache.maven.plugins:maven-compiler-plugin

Bumps [org.apache.maven.plugins:maven-compiler-plugin](https://github.com/apache/maven-compiler-plugin) from 3.12.0 to 3.12.1.
- [Release notes](https://github.com/apache/maven-compiler-plugin/releases)
- [Commits](apache/maven-compiler-plugin@maven-compiler-plugin-3.12.0...maven-compiler-plugin-3.12.1)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-compiler-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

rxjava2-jdbc-stored-procedure/pom.xml

@@ -26,7 +26,7 @@
         <plugins>
             <plugin>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.12.0</version>
+                <version>3.12.1</version>
                 <configuration>
                     <source>${maven.compiler.target}</source>
                     <target>${maven.compiler.target}</target>

rxjava2-jdbc/pom.xml

@@ -142,7 +142,7 @@
         <plugins>
             <plugin>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.12.0</version>
+                <version>3.12.1</version>
                 <configuration>
                     <source>${maven.compiler.target}</source>
                     <target>${maven.compiler.target}</target>

rxjava2-pool/pom.xml

@@ -68,7 +68,7 @@
         <plugins>
             <plugin>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.12.0</version>
+                <version>3.12.1</version>
                 <configuration>
                     <source>${maven.compiler.target}</source>
                     <target>${maven.compiler.target}</target>