xml,txt files

update the ci-cd, main.yml file to run the comit and push command onl…

…y if changes are detected using git status --porcelain option (wmo-im#201)

Co-authored-by: antoineMerleEUM <[email protected]>

Merge pull request wmo-im#154 from wmo-im/FT2023-2

FT2023-2 for CCT

xml files

Update C00.csv

implementation date has been delayed to 15 June

Merge pull request wmo-im#125 from wmo-im/FT2023-1

FT2023-1

xml files

Merge pull request wmo-im#111 from wmo-im/FT2022-2

FT2022-2

undo last commit

Merge pull request wmo-im#94 from wmo-im/editorialUpdate

Editorial update