Downgrade Error Prone's Guava version to 33.4.0

#5108

PiperOrigin-RevId: 775399740

Author: cushon

core/src/test/java/com/google/errorprone/bugpatterns/nullness/NullArgumentForNonNullParameterTest.java

@@ -178,24 +178,6 @@ void foo() {
         .doTest();
   }
 
-  @Test
-  public void positiveNullMarkedComGoogleCommon() {
-    conservativeHelper
-        .addSourceLines(
-            "Foo.java",
-            """
-            import com.google.common.base.Ascii;
-
-            class Foo {
-              void foo() {
-                // BUG: Diagnostic contains:
-                Ascii.toLowerCase(null);
-              }
-            }
-            """)
-        .doTest();
-  }
-
   @Test
   public void negativeNullMarkedComGoogleCommonButNullable() {
     conservativeHelper

pom.xml

@@ -29,7 +29,7 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <guava.version>33.4.8-jre</guava.version>
+    <guava.version>33.4.0-jre</guava.version>
     <gwt.version>2.10.0</gwt.version>
     <truth.version>1.4.0</truth.version>
     <autoservice.version>1.0.1</autoservice.version>