Use main as tags for reuse action

Signed-off-by: Josh Minor <josh.minor@arm.com>

.github/workflows/smarter-org-helm.yml

@@ -9,6 +9,3 @@ on:
 jobs:
   release:
     uses: smarter-project/reusable-workflows/.github/workflows/smarter-org-helm.yml@main
-    secrets:
-      GPG_KEYRING_BASE64: ${{ secrets.GPG_KEYRING_BASE64 }}
-      GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}

charts/smarter-device-manager/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: smarter-device-manager
 description: smarter-device-manager chart for SMARTER edge devices
 home: https://getsmarter.io
-version: 0.0.8
+version: 0.0.7
 appVersion: v1.20.11
 kubeVersion: ">=1.16.0-0"
 keywords:
@@ -11,7 +11,7 @@ keywords:
   - hardware
 sources:
   - https://github.com/smarter-project/smarter-device-manager
-icon: https://github.com/smarter-project/documentation/raw/main/ARM1636_Project_Logo_ST2_RGB_V1.png
+icon: https://gitlab.com/uploads/-/system/group/avatar/59012546/ARM1636_Project_Logo_ST2_RGB_V1.png
 annotations:
   artifacthub.io/changes: |
     - Fix template