build: revert Spotless plugin to '6.25.0'

diffplug/spotless#2372
Signed-off-by: Jendrik Johannes <[email protected]>

Author: jjohannes

build.gradle.kts

@@ -11,7 +11,7 @@ description = "Gradle convention plugins used by Hiero projects"
 dependencies {
     implementation("com.adarshr:gradle-test-logger-plugin:4.0.0")
     implementation("com.autonomousapps:dependency-analysis-gradle-plugin:2.6.1")
-    implementation("com.diffplug.spotless:spotless-plugin-gradle:7.0.1")
+    implementation("com.diffplug.spotless:spotless-plugin-gradle:6.25.0")
     implementation("com.github.node-gradle:gradle-node-plugin:7.1.0") // install NPM for prettier
     implementation("com.google.protobuf:protobuf-gradle-plugin:0.9.4")
     implementation("com.gradle.publish:plugin-publish-plugin:1.3.0")

src/main/kotlin/org.hiero.gradle.check.spotless-markdown.gradle.kts

@@ -7,7 +7,7 @@ spotless {
         targetExclude("platform-sdk/sdk/**", "node_modules/**")
         flexmark()
         trimTrailingWhitespace()
-        leadingTabsToSpaces()
+        indentWithSpaces()
         endWithNewline()
     }
 }

src/main/kotlin/org.hiero.gradle.check.spotless-misc.gradle.kts

@@ -8,7 +8,7 @@ spotless {
 
         // define the steps to apply to those files
         trimTrailingWhitespace()
-        leadingTabsToSpaces()
+        indentWithSpaces()
         endWithNewline()
     }
 }

src/main/kotlin/org.hiero.gradle.check.spotless-yaml.gradle.kts

@@ -26,7 +26,7 @@ spotless {
         prettier().npmExecutable(npm)
 
         trimTrailingWhitespace()
-        leadingTabsToSpaces()
+        indentWithSpaces()
         endWithNewline()
 
         licenseHeader(LicenseHeader.yamlFormat(project), "\\w+\\:").updateYearWithLatest(true)