Add recognition of MPL 2.0 (#31226)

This commit adds the ability for the dependencies info check to
recognize version 2.0 of the Mozilla Public License.

buildSrc/src/main/groovy/org/elasticsearch/gradle/DependenciesInfoTask.groovy

@@ -245,6 +245,8 @@ SOFTWARE\\.
 
         final String MOZILLA_1_1 = "Mozilla Public License.*Version 1.1"
 
+        final String MOZILLA_2_0 = "Mozilla\\s*Public\\s*License\\s*Version\\s*2\\.0"
+
         switch (licenseText) {
             case ~/.*${APACHE_2_0}.*/:
                 spdx = 'Apache-2.0'
@@ -273,6 +275,9 @@ SOFTWARE\\.
             case ~/.*${MOZILLA_1_1}.*/:
                 spdx = 'MPL-1.1'
                 break
+            case ~/.*${MOZILLA_2_0}.*/:
+                spdx = 'MPL-2.0'
+                break
             default:
                 break
         }