gitlab: ci nuget packages versioning

I am building and pushing nuget packages using gitlab CI. whenever the package is pushed to the nuget repository in gitlab, it appends the name of the branch.

this is my ci pipeline:

.vars-readstores:  variables:    PROJECT_NAME: "EventFlow.ReadStores"    PROJECT_ROOT: "Pathway.Packages/$PROJECT_NAME"    PROJECT_PATH: "$PROJECT_ROOT/$PROJECT_NAME.csproj"    PACKAGE_VERSION: "2.0.0"readstores-build:  image: mcr.microsoft.com/dotnet/sdk:8.0  extends:    - .vars-readstores  stage: nuget-build  before_script:    - dotnet nuget add source   script:    - dotnet restore $PROJECT_PATH    - dotnet build $PROJECT_PATH -c Release    - dotnet pack $PROJECT_PATH -c Release   artifacts:    paths:      - $PROJECT_ROOT/bin/Release/*.nupkgreadstores-push:  image: mcr.microsoft.com/dotnet/sdk:8.0  extends:    - .vars-readstores  stage: nuget-push  dependencies:    - readstores-build  script:        - |      dotnet nuget add source "$CI_SERVER_URL/api/v4/projects/$CI_PROJECT_ID/packages/nuget/index.json" --name gitlab --username gitlab-ci-token --password $CI_JOB_TOKEN --store-password-in-clear-text      echo "Pushing package to registry."      ORIGINAL_PACKAGE=$(ls $PROJECT_ROOT/bin/Release/*.nupkg)      mv "$ORIGINAL_PACKAGE" "$PROJECT_ROOT/bin/Release/${PROJECT_NAME}.${PACKAGE_VERSION}.nupkg"      dotnet nuget push "$PROJECT_ROOT/bin/Release/*.nupkg" --source gitlab  when: manual

this is the metadata of .csproj file

<Project Sdk="Microsoft.NET.Sdk"><PropertyGroup><TargetFramework>net8.0</TargetFramework><Nullable>enable</Nullable><PackageId>EventFlow.ReadStores</PackageId><Version>2.0.0</Version></PropertyGroup>