Version in base suite: 1:68.12.0-1~deb10u1
Version in overlay suite: 1:78.5.0-1~deb10u1

Base version: thunderbird_1:78.5.0-1~deb10u1
Target version: thunderbird_1:78.5.1-1~deb10u1
Base files: (none)
Target files: thunderbird_78.5.1-1~deb10u1_armhf.deb

+E: embedded-library usr/lib/thunderbird/libnspr4.so: nspr
+E: embedded-library usr/lib/thunderbird/libnss3.so: nss
+E: embedded-library usr/lib/thunderbird/libxul.so: libjpeg
+E: embedded-library usr/lib/thunderbird/libxul.so: libjsoncpp
+E: embedded-library usr/lib/thunderbird/libxul.so: libpng
+E: embedded-library usr/lib/thunderbird/libxul.so: libtheora