committing changes in /etc after apt run

Package changes:
-libmariadb3 1:10.9.5+maria~deb11 amd64
+libmariadb3 1:10.9.6+maria~deb11 amd64
-mariadb-client 1:10.9.5+maria~deb11 amd64
+mariadb-client 1:10.9.6+maria~deb11 amd64
-mariadb-client-core 1:10.9.5+maria~deb11 amd64
-mariadb-common 1:10.9.5+maria~deb11 all
-mariadb-server 1:10.9.5+maria~deb11 amd64
+mariadb-client-core 1:10.9.6+maria~deb11 amd64
+mariadb-common 1:10.9.6+maria~deb11 all
+mariadb-server 1:10.9.6+maria~deb11 amd64
-mariadb-server-core 1:10.9.5+maria~deb11 amd64
+mariadb-server-core 1:10.9.6+maria~deb11 amd64
-mysql-common 1:10.9.5+maria~deb11 all
+mysql-common 1:10.9.6+maria~deb11 all

init.d/mariadb

@@ -84,7 +84,10 @@ sanity_checks() {
 
   # check for diskspace shortage
   datadir=`mariadbd_get_param datadir`
-  if LC_ALL=C BLOCKSIZE= df --portability $datadir/. | tail -n 1 | awk '{ exit ($4>4096) }'; then
+  # As preset blocksize of GNU df is 1024 then available bytes is $df_available_blocks * 1024
+  # 4096 blocks is then lower than 4 MB
+  df_available_blocks=`LC_ALL=C BLOCKSIZE= df --output=avail "$datadir" | tail -n 1`
+  if [ "$df_available_blocks" -lt "4096" ]; then
     log_failure_msg "$0: ERROR: The partition with $datadir is too full!"
     echo                "ERROR: The partition with $datadir is too full!" | $ERR_LOGGER
     exit 1