Rename .yml to .yaml, the official extension

Author: vy

.github/dependabot.yml renamed to .github/dependabot.yaml

@@ -30,7 +30,7 @@
 import org.junit.jupiter.api.Test;
 
 @Tag("yaml")
-@LoggerContextSource("log4j2-2134.yml")
+@LoggerContextSource("log4j2-2134.yaml")
 public class JiraLog4j2_2134Test {
 
     @Test

.github/workflows/build.yml renamed to .github/workflows/build.yaml

@@ -27,7 +27,7 @@
 import org.apache.logging.log4j.core.test.junit.Named;
 import org.junit.jupiter.api.Test;
 
-@LoggerContextSource("SequenceNumberPatternConverterTest.yml")
+@LoggerContextSource("SequenceNumberPatternConverterTest.yaml")
 public class SequenceNumberPatternConverterTest {
 
     @Test

.github/workflows/codeql-analysis.yml renamed to .github/workflows/codeql-analysis.yaml

@@ -27,7 +27,7 @@
 import org.apache.logging.log4j.core.test.junit.Named;
 import org.junit.jupiter.api.Test;
 
-@LoggerContextSource("SequenceNumberPatternConverterZeroPaddedTest.yml")
+@LoggerContextSource("SequenceNumberPatternConverterZeroPaddedTest.yaml")
 public class SequenceNumberPatternConverterZeroPaddedTest {
 
     @Test