No changes detected

Hi, the action always returns `no changes detected`?

```yaml
on:
push:
branches: [master]

jobs:

release-chart:
runs-on: ubuntu-latest
steps:
-
uses: actions/checkout@v2
-
name: Configure Git
run: |
git config user.name "$GITHUB_ACTOR"
git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
-
name: Install helm
uses: azure/setup-helm@v1
-
name: Run chart-releaser
uses: helm/chart-releaser-action@v1.0.0
env:
CR_TOKEN: "${{ secrets.MY_TOKEN }}"

```

Start with the workflow shown in the issue and the helm/chart-releaser-action@v1.0.0 entry point, then check how the action determines whether chart changes exist. Reproduce the run with the provided checkout, Helm setup, token, and branch configuration; it is done when a qualifying chart change is detected instead of always reporting no changes.

Written by the indexing model from the issue text.