fix(deps): update spotless packages to v8 (major) (open-telemetry#14784)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: otelbot <[email protected]>

Author: renovate[bot]

benchmark-overhead/build.gradle.kts

@@ -1,6 +1,6 @@
 plugins {
   id("java")
-  id("com.diffplug.spotless") version "7.2.1"
+  id("com.diffplug.spotless") version "8.0.0"
 }
 
 spotless {

conventions/build.gradle.kts

@@ -1,7 +1,7 @@
 plugins {
   `kotlin-dsl`
   // When updating, update below in dependencies too
-  id("com.diffplug.spotless") version "7.2.1"
+  id("com.diffplug.spotless") version "8.0.0"
 }
 
 spotless {
@@ -54,7 +54,7 @@ dependencies {
   implementation("org.apache.maven:maven-aether-provider:3.3.9")
 
   // When updating, update above in plugins too
-  implementation("com.diffplug.spotless:spotless-plugin-gradle:7.2.1")
+  implementation("com.diffplug.spotless:spotless-plugin-gradle:8.0.0")
   implementation("com.google.guava:guava:33.5.0-jre")
   implementation("com.gradleup.shadow:shadow-gradle-plugin:9.2.1")
   implementation("org.apache.httpcomponents:httpclient:4.5.14")

custom-checks/src/test/java/io/opentelemetry/javaagent/customchecks/OtelInternalJavadocTest.java

@@ -14,7 +14,7 @@ class OtelInternalJavadocTest {
   void test() {
     doTest(
         "internal/InternalJavadocPositiveCases.java",
-        """
+"""
 package io.opentelemetry.javaagent.customchecks.internal;
 
 // BUG: Diagnostic contains: doesn't end with any of the applicable javadoc disclaimers
@@ -30,7 +30,7 @@ public static class Two {}
 """);
     doTest(
         "internal/InternalJavadocNegativeCases.java",
-        """
+"""
 package io.opentelemetry.javaagent.customchecks.internal;
 
 /**

examples/distro/build.gradle

@@ -12,7 +12,7 @@ buildscript {
     }
   }
   dependencies {
-    classpath "com.diffplug.spotless:spotless-plugin-gradle:7.2.1"
+    classpath "com.diffplug.spotless:spotless-plugin-gradle:8.0.0"
     classpath "com.gradleup.shadow:shadow-gradle-plugin:9.2.1"
     classpath "io.opentelemetry.instrumentation:gradle-plugins:2.21.0-alpha-SNAPSHOT"
   }

examples/extension/build.gradle

@@ -11,7 +11,7 @@ plugins {
   See https://imperceptiblethoughts.com/shadow/ for more details about Shadow plugin.
    */
   id "com.gradleup.shadow" version "9.2.1"
-  id "com.diffplug.spotless" version "7.2.1"
+  id "com.diffplug.spotless" version "8.0.0"
 
   id "io.opentelemetry.instrumentation.muzzle-generation" version "2.21.0-alpha-SNAPSHOT"
   id "io.opentelemetry.instrumentation.muzzle-check" version "2.21.0-alpha-SNAPSHOT"

instrumentation-docs/src/test/java/io/opentelemetry/instrumentation/docs/auditors/SupportedLibrariesAuditorTest.java

@@ -73,7 +73,8 @@ void testPerformAuditWithMissingItems() throws IOException, InterruptedException
   }
 
   private static String createLocalSupportedLibrariesContent() {
-    return """
+    return
+"""
 # Supported libraries, frameworks, application servers, and JVMs
 
 We automatically instrument and support a huge number of libraries, frameworks,
@@ -105,7 +106,8 @@ private static String createLocalSupportedLibrariesContent() {
   }
 
   private static String createRemoteSupportedLibrariesContent() {
-    return """
+    return
+"""
 # Supported libraries, frameworks, application servers, and JVMs
 
 We automatically instrument and support a huge number of libraries, frameworks,
@@ -137,7 +139,8 @@ private static String createRemoteSupportedLibrariesContent() {
   }
 
   private static String createRemoteSupportedLibrariesContentMissing() {
-    return """
+    return
+"""
 # Supported libraries, frameworks, application servers, and JVMs
 
 We automatically instrument and support a huge number of libraries, frameworks,

instrumentation-docs/src/test/java/io/opentelemetry/instrumentation/docs/auditors/SuppressionListAuditorTest.java

@@ -81,7 +81,7 @@ void testGetAuditorName() {
   @Test
   void testParseDocumentationDisabledList() {
     String testFile =
-        """
+"""
 ## Enable manual instrumentation only
 
 You can suppress all auto instrumentations but have support for manual
@@ -116,7 +116,7 @@ void testParseDocumentationDisabledList() {
   @Test
   void testParseInstrumentationList() {
     String testList =
-        """
+"""
 libraries:
   activej:
   - name: activej-http-6.0
@@ -191,7 +191,8 @@ void testIdentifyMissingItemsWithHyphenatedMatch() {
   }
 
   private static String createDisableListContent() {
-    return """
+    return
+"""
 ## Enable manual instrumentation only
 
 You can suppress all auto instrumentations but have support for manual
@@ -216,7 +217,8 @@ private static String createDisableListContent() {
   }
 
   private static String createDisableListContentMissing() {
-    return """
+    return
+"""
 ## Enable manual instrumentation only
 
 You can suppress all auto instrumentations but have support for manual
@@ -240,7 +242,8 @@ private static String createDisableListContentMissing() {
   }
 
   private static String createInstrumentationListContent() {
-    return """
+    return
+"""
 libraries:
   activej:
   - name: activej-http-6.0