Bump versions.errorprone from 2.18.0 to 2.19.1

Bumps `versions.errorprone` from 2.18.0 to 2.19.1.

Updates `com.google.errorprone:error_prone_core` from 2.18.0 to 2.19.1
- [Release notes](https://github.com/google/error-prone/releases)
- [Commits](google/error-prone@v2.18.0...v2.19.1)

Updates `com.google.errorprone:error_prone_test_helpers` from 2.18.0 to 2.19.1
- [Release notes](https://github.com/google/error-prone/releases)
- [Commits](google/error-prone@v2.18.0...v2.19.1)

---
updated-dependencies:
- dependency-name: com.google.errorprone:error_prone_core
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.google.errorprone:error_prone_test_helpers
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

gradle/dependencies.gradle

@@ -6,7 +6,7 @@ def versions = [:]
 
 versions.bytebuddy = '1.14.4'
 versions.junitJupiter = '5.9.3'
-versions.errorprone = '2.18.0'
+versions.errorprone = '2.19.1'
 
 libraries.junit4 = 'junit:junit:4.13.2'
 libraries.junitJupiterApi = "org.junit.jupiter:junit-jupiter-api:${versions.junitJupiter}"

src/test/java/org/mockito/exceptions/base/TraceBuilder.java

@@ -4,6 +4,8 @@
  */
 package org.mockito.exceptions.base;
 
+import static org.assertj.core.api.Assertions.assertThat;
+
 import java.util.Collections;
 import java.util.LinkedList;
 import java.util.List;
@@ -20,7 +22,7 @@ public Throwable toThrowable() {
     }
 
     private List<StackTraceElement> toTraceList() {
-        assert methods.length == 0 || classes.length == 0;
+        assertThat(methods.length == 0 || classes.length == 0).isTrue();
 
         List<StackTraceElement> trace = new LinkedList<StackTraceElement>();
         for (String method : methods) {