Update dependency com.facebook:ktfmt to v0.40

Author: renovate[bot]

lib/build.gradle

@@ -37,7 +37,7 @@ dependencies {
 
 	palantirJavaFormatCompileOnly 'com.palantir.javaformat:palantir-java-format:1.1.0'
 
-	String VER_KTFMT = '0.39'
+	String VER_KTFMT = '0.40'
 	ktfmtCompileOnly "com.facebook:ktfmt:$VER_KTFMT"
 	String VER_KTLINT_GOOGLE_JAVA_FORMAT = '1.7' // for JDK 8 compatibility
 	ktfmtCompileOnly("com.google.googlejavaformat:google-java-format") {