ci: fix versions for the upgrade workflow

.github/workflows/chart-upgrade.yaml

@@ -45,4 +45,4 @@ jobs:
     with:
       upgrade-strategy: ${{ inputs.upgrade-strategy }}
       excluded-dependencies: ${{ inputs.excluded-dependencies }}
-      dry-run: ${{ inputs.dry-run }}
+      dry-run: ${{ inputs.dry-run }}

charts/loki-microservice/Chart.yaml

@@ -1,18 +1,18 @@
 ---
-apiVersion: "v2"
-name: "loki-distributed"
-version: "0"
+apiVersion: v2
+name: loki-distributed
+version: 0
 description: |
   This chart installs loki-distributed.
   Loki is a log aggregation system made by Grafana Labs, and inspired by Prometheus.
 dependencies:
-  - name: "loki-distributed"
-    version: "~0.69.0"
+  - name: loki-distributed
+    version: 0.69.0
     repository: "https://grafana.github.io/helm-charts"
-  - name: "promtail"
-    version: "~6.2.1"
+  - name: promtail
+    version: 6.2.1
     repository: "https://grafana.github.io/helm-charts"
-  - name: "filebeat"
+  - name: filebeat
     condition: filebeat.enabled
-    version: "~7.17.3"
+    version: 7.17.3
     repository:  "https://helm.elastic.co"

charts/loki-stack/Chart.yaml

@@ -1,11 +1,11 @@
 ---
-apiVersion: "v2"
-name: "loki-stack"
-version: "0"
+apiVersion: v2
+name: loki-stack
+version: 0
 description: |
   This chart installs loki-stack.
   Loki is a log aggregation system made by Grafana Labs, and inspired by Prometheus.
 dependencies:
-  - name: "loki-stack"
-    version: "^2"
+  - name: loki-stack
+    version: 2.8.9
     repository: "https://grafana.github.io/helm-charts"