Bump the actions group with 1 update

Bumps the actions group with 1 update: [mdgreenwald/mozilla-sops-action](https://github.com/mdgreenwald/mozilla-sops-action).


Updates `mdgreenwald/mozilla-sops-action` from 1.5.0 to 1.6.0
- [Release notes](https://github.com/mdgreenwald/mozilla-sops-action/releases)
- [Commits](mdgreenwald/mozilla-sops-action@v1.5.0...v1.6.0)

---
updated-dependencies:
- dependency-name: mdgreenwald/mozilla-sops-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/deploy-grafana-dashboards.yaml

@@ -49,7 +49,7 @@ jobs:
           sudo apt install jsonnet
 
       - name: Install sops
-        uses: mdgreenwald/mozilla-sops-action@v1.5.0
+        uses: mdgreenwald/mozilla-sops-action@v1.6.0
 
       - name: Setup sops credentials to decrypt repo secrets
         uses: google-github-actions/auth@v2

.github/workflows/ensure-uptime-checks.yaml

@@ -38,7 +38,7 @@ jobs:
       # We use sops to store encrypted GCP ServiceAccount Key that terraform uses
       # to run, as well as PagerDuty config terraform uses
       - name: Install sops
-        uses: mdgreenwald/mozilla-sops-action@v1.5.0
+        uses: mdgreenwald/mozilla-sops-action@v1.6.0
 
       # Authenticate with the correct KMS key that sops will use.
       - name: Setup sops credentials to decrypt repo secrets