chore: update linter to the latest and format code (#1473)

* chore: update linter to the latest

Follows from googleapis/java-shared-config#1003

* chore: format files

Author: diegomarquezp

.github/workflows/ci.yaml

@@ -104,7 +104,7 @@ jobs:
     - uses: actions/setup-java@v4
       with:
         distribution: temurin
-        java-version: 11
+        java-version: 17
     - run: java -version
     - run: .kokoro/build.sh
       env:

.kokoro/build.sh

@@ -52,7 +52,7 @@ test)
     RETURN_CODE=$?
     ;;
 lint)
-    mvn com.coveo:fmt-maven-plugin:check -B -ntp
+    mvn com.spotify.fmt:fmt-maven-plugin:check -B -ntp
     RETURN_CODE=$?
     ;;
 javadoc)

src/main/java/com/google/cloud/logging/logback/LoggingAppender.java

@@ -538,19 +538,19 @@ static void writeStack(IThrowableProxy throwProxy, String prefix, StringBuilder
    */
   private static Severity severityFor(Level level) {
     switch (level.toInt()) {
-        // TRACE
+      // TRACE
       case 5000:
         return Severity.DEBUG;
-        // DEBUG
+      // DEBUG
       case 10000:
         return Severity.DEBUG;
-        // INFO
+      // INFO
       case 20000:
         return Severity.INFO;
-        // WARNING
+      // WARNING
       case 30000:
         return Severity.WARNING;
-        // ERROR
+      // ERROR
       case 40000:
         return Severity.ERROR;
       default: