Bump helm/chart-testing-action from 2.6.0 to 2.6.1 (#2791)

Bumps [helm/chart-testing-action](https://github.com/helm/chart-testing-action) from 2.6.0 to 2.6.1.
- [Release notes](https://github.com/helm/chart-testing-action/releases)
- [Commits](helm/chart-testing-action@b43128a...e6669bc)

---
updated-dependencies:
- dependency-name: helm/chart-testing-action
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/chart.yaml

@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@b43128a8b25298e1e7b043b78ea6613844e079b1 # v2.6.0
+        uses: helm/chart-testing-action@e6669bcd63d7cb57cb4380c33043eebe5d111992 # v2.6.1
 
       # Lint all chart values including those in the ci directory.
       - name: Run chart-testing (lint)
@@ -73,7 +73,7 @@ jobs:
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@b43128a8b25298e1e7b043b78ea6613844e079b1 # v2.6.0
+        uses: helm/chart-testing-action@e6669bcd63d7cb57cb4380c33043eebe5d111992 # v2.6.1
 
       - name: Create KinD cluster
         uses: helm/kind-action@dda0770415bac9fc20092cacbc54aa298604d140 # v1.8.0