Finish releasing v1.25.3.

Amp-Thread-ID: https://ampcode.com/threads/T-019cd971-aa36-7259-af67-6ae41baad8cc
Co-authored-by: Amp <amp@ampcode.com>

Author: steve-the-edwards

gradle.properties

@@ -8,8 +8,8 @@ android.useAndroidX=true
 systemProp.org.gradle.internal.publish.checksums.insecure=true
 
 GROUP=com.squareup.workflow1
-VERSION_NAME=1.25.3
-LAST_PUBLISHED_VERSION_NAME=1.25.2
+VERSION_NAME=1.25.4-SNAPSHOT
+LAST_PUBLISHED_VERSION_NAME=1.25.3
 
 POM_DESCRIPTION=Square Workflow