chore(deps): update dependency org.apache.maven.plugins:maven-compiler-plugin to v3.12.1

Author: renovate[bot]

racing-car-katas/exercises/Java/Leaderboard/pom.xml

@@ -18,7 +18,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.3</version>
+                <version>3.12.1</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>

racing-car-katas/exercises/Java/TelemetrySystem/pom.xml

@@ -18,7 +18,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.3</version>
+                <version>3.12.1</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>

racing-car-katas/exercises/Java/TextConverter/pom.xml

@@ -23,7 +23,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.3</version>
+                <version>3.12.1</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>

racing-car-katas/exercises/Java/TirePressureMonitoringSystem/pom.xml

@@ -18,7 +18,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.3</version>
+                <version>3.12.1</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>

racing-car-katas/exercises/Java/TurnTicketDispenser/pom.xml

@@ -18,7 +18,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.3</version>
+                <version>3.12.1</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>