fix(ci/chart): pin helm to v3.19.2

Author: vflaux

.github/workflows/lint-test-chart.yaml

@@ -32,7 +32,7 @@ jobs:
       - name: Install Helm
         uses: azure/setup-helm@1a275c3b69536ee54be43f2070a358922e12c8d4 # v4.3.1
         with:
-          version: latest
+          version: v3.19.3 # TODO: change to latest once plugins fully support helm v4
 
       - name: Configure Helm
         run: |

.github/workflows/release-chart.yaml

@@ -147,7 +147,7 @@ jobs:
       - name: Install Helm
         uses: azure/setup-helm@1a275c3b69536ee54be43f2070a358922e12c8d4 # v4.3.1
         with:
-          version: latest
+          version: v3.19.3 # TODO: change to latest once plugins fully support helm v4
 
       - name: Run chart-releaser
         uses: helm/chart-releaser-action@cae68fefc6b5f367a0275617c9f83181ba54714f # v1.7.0