ntfy: mount a CA bundle without the compromised eMudhra roots

Mount patched-ca-bundle (see ca-bundle/) over /etc/ssl/certs so it stops trusting the compromised eMudhra intermediates (https://emudhra.we-have-a-problem.com).

ntfy/ntfy-deployment.yaml

@@ -60,7 +60,15 @@ spec:
           volumeMounts:
             - name: data
               mountPath: /var/lib/ntfy
+            # Trust store without the compromised eMudhra intermediates,
+            # see ca-bundle/. Drop once the image ships a fixed bundle.
+            - name: patched-ca-bundle
+              mountPath: /etc/ssl/certs
+              readOnly: true
       volumes:
         - name: data
           persistentVolumeClaim:
             claimName: ntfy-data
+        - name: patched-ca-bundle
+          configMap:
+            name: patched-ca-bundle