chore(deps): update dependency berp to v1.6.0 (#452)

- Update .NET version from v8 to v9

Author: kieran-ryan

.github/workflows/test-codegen.yml

@@ -19,11 +19,11 @@ jobs:
 
       - uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: '8.0.x'
+          dotnet-version: '9.0.x'
 
       - name: install berp
         run: |
-          dotnet tool update Berp --version 1.5.0 --tool-path ~/bin
+          dotnet tool update Berp --version 1.6.0 --tool-path ~/bin
           echo "~/bin" >> $GITHUB_PATH
 
       - name: generate code for all languages

Dockerfile

@@ -3,7 +3,7 @@
 #
 # See CONTRIBUTING.md
 #
-FROM mcr.microsoft.com/dotnet/sdk:8.0
+FROM mcr.microsoft.com/dotnet/sdk:9.0
 
 ENV DEBIAN_FRONTEND=noninteractive
 
@@ -19,7 +19,7 @@ WORKDIR /app
 RUN dotnet --list-sdks
 
 # Install Berp (dotnet tool installs are user-global; not system global)
-RUN dotnet tool install --global Berp --version 1.5.0 \
+RUN dotnet tool install --global Berp --version 1.6.0 \
       && echo 'export PATH="$PATH:/root/.dotnet/tools"' >> ~/.bashrc
 
 WORKDIR /app