remove target folders (for cargo developement)

borg-backup.theseus.sh

@@ -44,6 +44,7 @@ $BORG_BIN create                         \
     --exclude '*/.Trash*'           \
     --exclude '*/Trash*'           \
     --exclude '*/build/*'           \
+    --exclude '*/target/*'           \
     --exclude '*Steam*'           \
                                     \
     ${BORG_REPO}::'{hostname}-{now}'            \