chore(deps): update docker.io/grafana/mcp-grafana docker tag to v0.11.6

Author: renovate[bot]

registries/official/servers/grafana/server.json

@@ -3,7 +3,7 @@
   "_meta": {
     "io.modelcontextprotocol.registry/publisher-provided": {
       "io.github.stacklok": {
-        "docker.io/grafana/mcp-grafana:0.11.4": {
+        "docker.io/grafana/mcp-grafana:0.11.6": {
           "metadata": {
             "last_updated": "2026-03-23T03:03:35Z",
             "stars": 2618
@@ -141,7 +141,7 @@
           "name": "GRAFANA_ORG_ID"
         }
       ],
-      "identifier": "docker.io/grafana/mcp-grafana:0.11.4",
+      "identifier": "docker.io/grafana/mcp-grafana:0.11.6",
       "registryType": "oci",
       "transport": {
         "type": "sse",

registries/toolhive/servers/grafana/server.json

@@ -3,7 +3,7 @@
   "_meta": {
     "io.modelcontextprotocol.registry/publisher-provided": {
       "io.github.stacklok": {
-        "docker.io/grafana/mcp-grafana:0.11.4": {
+        "docker.io/grafana/mcp-grafana:0.11.6": {
           "metadata": {
             "last_updated": "2026-03-22T03:02:38Z",
             "stars": 2616
@@ -141,7 +141,7 @@
           "name": "GRAFANA_ORG_ID"
         }
       ],
-      "identifier": "docker.io/grafana/mcp-grafana:0.11.4",
+      "identifier": "docker.io/grafana/mcp-grafana:0.11.6",
       "registryType": "oci",
       "transport": {
         "type": "sse",