Update plugin repo for release

[pkosiec]

Description

Changes proposed in this pull request:

• Update plugin repo for release

Testing

Run the changes in isolation:

docker run --rm -it alpine sh

wget https://raw.githubusercontent.com/pkosiec/botkube/update-plugin-repo-for-release/helm/botkube/values.yaml
cat values.yaml

# export env vars
export LATEST_PLUGIN_INDEX_URL="https://storage.googleapis.com/botkube-plugins-latest/plugins-index.yaml"
export HELM_FOLDER="."
export NEXT_VERSION="v1.0.1"

# run slightly modified line (we replaced `${{ inputs.next-version }}` with `${NEXT_VERSION}`
find ${HELM_FOLDER} -name "*.yaml" -exec sed -i "s~${LATEST_PLUGIN_INDEX_URL}~https://github.com/kubeshop/botkube/releases/download/${NEXT_VERSION}/plugins-index.yaml~g" {} +

cat values.yaml

Related issue(s)

Resolves #1032

[josefkarasek]

lgtm 👍