Version in base suite: 1.8.6+dfsg-2
Base version: arduino-core-avr_1.8.6+dfsg-2
Target version: arduino-core-avr_1.8.7+dfsg-1~deb13u1
Base files: arduino-core-avr_1.8.6+dfsg-2.dsc
Target files: arduino-core-avr_1.8.7+dfsg-1~deb13u1.dsc

+W: newer-standards-version 4.7.3 (current is 4.7.2)
+W: recommended-field (in section for source) Priority [debian/control:1]