docs: dts: building: bump kas-container from 3.0.2 to 4.2

Signed-off-by: Michał Iwanicki <michal.iwanicki@3mdeb.com>

Author: m-iwanicki

docs/dasharo-tools-suite/documentation/building.md

@@ -12,11 +12,11 @@ The following must be met to build DTS:
 
 * Linux PC (tested on `Ubuntu 20.04 LTS`),
 * [docker](https://docs.docker.com/install/linux/docker-ce/ubuntu/) installed,
-* [kas-container 3.0.2](https://raw.githubusercontent.com/siemens/kas/3.0.2/kas-container)
+* [kas-container 4.2](https://raw.githubusercontent.com/siemens/kas/4.2/kas-container)
   script downloaded and available in [PATH](https://en.wikipedia.org/wiki/PATH_(variable)),
 
 ```bash
-wget -O ~/bin/kas-container https://raw.githubusercontent.com/siemens/kas/3.0.2/kas-container
+wget -O ~/bin/kas-container https://raw.githubusercontent.com/siemens/kas/4.2/kas-container
 ```
 
 ```bash