ci(release): update readme (#25)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

README.md

@@ -15,10 +15,10 @@ The programs, version numbers, and the date stamp on the downloaded file used to
 | crt | 1.3.1 | 04/11/2017 |
 | gridgen | 1.0.02 | 10/24/2018 |
 | gsflow | 2.2.1 | 04/07/2022 |
-| libmf6 | 6.4.3 | 02/07/2024 |
+| libmf6 | 6.4.4 | 02/13/2024 |
 | mf2000 | 1.19.01 | 03/30/2010 |
 | mf2005 | 1.12.00 | 12/07/2021 |
-| mf6 | 6.4.3 | 02/07/2024 |
+| mf6 | 6.4.4 | 02/13/2024 |
 | mflgr | 2.0.0 | 09/20/2013 |
 | mfnwt | 1.3.0 | 09/07/2022 |
 | mfusg | 1.5 | 02/27/2019 |
@@ -31,6 +31,6 @@ The programs, version numbers, and the date stamp on the downloaded file used to
 | swtv4 | 4.00.05 | 10/24/2018 |
 | triangle | 1.6 | 07/05/2023 |
 | vs2dt | 3.3 | 04/02/2018 |
-| zbud6 | 6.4.3 | 02/07/2024 |
+| zbud6 | 6.4.4 | 02/13/2024 |
 | zonbud3 | 3.01 | 10/25/2018 |
 | zonbudusg | 1.5 | 02/27/2019 |