Version in base suite: 1:102.10.0-1~deb11u1
Version in overlay suite: 1:102.13.1-1~deb11u1

Base version: thunderbird_1:102.13.1-1~deb11u1
Target version: thunderbird_1:115.3.1-1~deb11u1
Base files: thunderbird-dbgsym_102.13.1-1~deb11u1_arm64.deb thunderbird_102.13.1-1~deb11u1_arm64.deb
Target files: thunderbird-dbgsym_115.3.1-1~deb11u1_arm64.deb thunderbird_115.3.1-1~deb11u1_arm64.deb

+E: embedded-library usr/lib/thunderbird/libmozavutil.so: libavutil