docs: update compat matrix boost versions

Author: Jacob Heun

getting-started/README.md

@@ -15,9 +15,9 @@ The Boost source code repository is hosted at [github.com/filecoin-project/boost
 | v1.5.0                     | v1.18.0                  | 1.18.x         |
 | v1.5.1, v1.5.2, v1.5.3     | v1.18.0, v1.19.0         | 1.18.x         |
 | v1.6.0, v1.6.1, v1.6.2-rc1 | v1.20.x                  | 1.18.x         |
-| v1.6.3                     | v1.22.x                  | 1.18.x         |
+| v1.6.3, v1.6.4             | v1.22.x                  | 1.18.x         |
 | v1.6.2-rc2, v1.7.0-rc1     | v1.21.0-rc1, v1.21.0-rc2 | 1.20.x         |
-| v1.7.0, v1.7.1             | v1.23.x                  | 1.20.x         |
+| v1.7.0, v1.7.1, v1.7.2     | v1.23.x                  | 1.20.x         |
 
 ### Building and installing