[#515] Run ktlint under more recent JVMs

build-conventions-secant/src/main/kotlin/secant.ktlint-conventions.gradle.kts

@@ -24,11 +24,8 @@ tasks {
     }
 
     register("ktlintFormat", org.gradle.api.tasks.JavaExec::class) {
-        // Workaround for ktlint bug; force to run on an older JDK
-        // https://github.com/pinterest/ktlint/issues/1274
-        javaLauncher.set(javaToolchains.launcherFor {
-            languageVersion.set(JavaLanguageVersion.of(JavaVersion.VERSION_11.majorVersion))
-        })
+        // https://github.com/pinterest/ktlint/issues/1195#issuecomment-1009027802
+        jvmArgs("--add-opens", "java.base/java.lang=ALL-UNNAMED")
 
         description = "Apply code style formatting with ktlint"
         classpath = ktlint