[S1155,S1255 fw 4.2.4] Realign Pulse Energy Meter (BE6) to new address

IMPORTANT NOTE: updated exactly one line in the CSV, however, the
convert_csv script made widespread changes to the formats of unaffected
registers when creating the json (different sizes changing to u16).
Is that OK?


## Pull Request Type

Please select the type of your PR:

- [x] Add/Update Registries
- [ ] Feature
- [ ] Bug Fix

## Description

**Heatpump model**: 
S1255-6
**Firmware version**: 
 4.2.4
With the heatpump's firmware updated to version 4.2.4, address of the
pulse energy meter (BE6) has changed from 396 to 398 in the CSV file.
Also, format changed from "6" to "u32" in CSV.
Parameter had been added in Issue
#213.
## Checklist

- [x] I have followed the instructions
- [ ] I ensured that my changes are well tested

Author: yozik04

nibe/console_scripts/convert_csv.py

@@ -163,6 +163,12 @@ def _fix_data_size_column(self):
             "4.0": "u8",
             "5.0": "u16",
             "6.0": "u32",
+            "1": "s8",
+            "2": "s16",
+            "3": "s32",
+            "4": "u8",
+            "5": "u16",
+            "6": "u32",
             "s8": "s8",
             "s16": "s16",
             "s32": "s32",