chore: update documentation for .NET requirement and scripts

CONTRIBUTING.md

@@ -218,7 +218,7 @@ The following tools need to be installed on your system prior to installing the
 - [Node.js >= 20.x](https://nodejs.org/en/download)
   - We recommend using a version in [Active LTS](https://nodejs.org/en/about/releases/)
 - [Yarn >= 1.19.1, < 2](https://yarnpkg.com/lang/en/docs/install)
-- [.NET SDK >= 6.0.x](https://www.microsoft.com/net/download)
+- [.NET SDK >= 8.0.x](https://www.microsoft.com/net/download)
 - [Python >= 3.8.0, < 4.0](https://www.python.org/downloads/release/python-380/)
 - Either [Docker >= 19.03](https://docs.docker.com/get-docker/), [Finch >= 0.3.0](https://runfinch.com/), or another Docker replacement
   - If using a Docker replacement, the `CDK_DOCKER` environment variable must be set to the replacement command's name (e.g. `export CDK_DOCKER=finch`)

README.md

@@ -24,7 +24,7 @@ The CDK is available in the following languages:
   * We recommend using a version in [Active LTS](https://nodejs.org/en/about/previous-releases)
 * Python ([Python ≥ 3.8](https://www.python.org/downloads/))
 * Java ([Java ≥ 8](https://www.oracle.com/technetwork/java/javase/downloads/index.html) and [Maven ≥ 3.5.4](https://maven.apache.org/download.cgi))
-* .NET ([.NET ≥ 6.0](https://dotnet.microsoft.com/download))
+* .NET ([.NET ≥ 8.0](https://dotnet.microsoft.com/download))
 * Go ([Go ≥ 1.16.4](https://golang.org/))
 
 Third-party Language Deprecation: language version is only supported until its EOL (End Of Life) shared by the vendor or community and is subject to change with prior notice.

scripts/check-build-prerequisites.sh

@@ -121,13 +121,13 @@ else
     fi
 fi
 
-# [.NET == 6.0.x]
+# [.NET >= 8.0.x]
 app="dotnet"
-app_min="6.0.100"
+app_min="8.0.100"
 check_which $app $app_min
 app_v=$(${app} --list-sdks)
 echo -e "Checking dotnet version... \c"
-if [ $(echo $app_v | grep -c -E "[6789]\.[0-9]+\.[0-9]+") -eq 1 ]
+if [ $(echo $app_v | grep -c -E "[89]\.[0-9]+\.[0-9]+") -eq 1 ]
 then
     echo "Ok"
 else

scripts/check-pack-prerequisites.sh

@@ -73,13 +73,13 @@ else
     wrong_version
 fi
 
-# [.NET SDK 6.0.*]
+# [.NET SDK 8.0.*]
 app="dotnet"
-app_min="6.0.100"
+app_min="8.0.100"
 check_which $app $app_min
 app_v=$(${app} --list-sdks)
 echo -e "Checking $app version... \c"
-if [ $(echo $app_v | grep -c -E "6\.0\.[0-9].*|[4-9]\..*") -eq 1 ]
+if [ $(echo $app_v | grep -c -E "8\.0\.[0-9].*|[4-9]\..*") -eq 1 ]
 then
     echo "Ok"
 else