dev: bump prometheus to 2.31.1

[mayocream]

ref: #1224
diff with https://github.com/prometheus-operator/kube-prometheus/blob/0a5b89954a2c6d2ced4ca79c2a24bd094e7c9247/manifests/prometheus-prometheus.yaml

diff --git a/manifests/infra/prometheus/base/prometheus.yaml b/manifests/infra/prometheus/base/prometheus.yaml
index b6ef5b78..09d770b2 100644
--- a/manifests/infra/prometheus/base/prometheus.yaml
+++ b/manifests/infra/prometheus/base/prometheus.yaml
@@ -118,7 +118,7 @@ metadata:
     app.kubernetes.io/component: prometheus
     app.kubernetes.io/name: prometheus
     app.kubernetes.io/part-of: kube-prometheus
-    app.kubernetes.io/version: 2.26.0
+    app.kubernetes.io/version: 2.31.1
     prometheus: k8s
   name: k8s
   namespace: monitoring
@@ -129,8 +129,9 @@ spec:
       name: alertmanager-main
       namespace: monitoring
       port: web
+  enableFeatures: []
   externalLabels: {}
-  image: quay.io/prometheus/prometheus:v2.26.0
+  image: quay.io/prometheus/prometheus:v2.31.1
   nodeSelector:
     kubernetes.io/os: linux
   podMetadata:
@@ -138,7 +139,8 @@ spec:
       app.kubernetes.io/component: prometheus
       app.kubernetes.io/name: prometheus
       app.kubernetes.io/part-of: kube-prometheus
-      app.kubernetes.io/version: 2.26.0
+      app.kubernetes.io/version: 2.31.1
+      prometheus: k8s
   podMonitorNamespaceSelector: {}
   podMonitorSelector: {}
   probeNamespaceSelector: {}
@@ -147,10 +149,8 @@ spec:
   resources:
     requests:
       memory: 400Mi
-  ruleSelector:
-    matchLabels:
-      prometheus: k8s
-      role: alert-rules
+  ruleNamespaceSelector: {}
+  ruleSelector: {}
   securityContext:
     fsGroup: 2000
     runAsNonRoot: true
@@ -158,7 +158,7 @@ spec:
   serviceAccountName: prometheus-k8s
   serviceMonitorNamespaceSelector: {}
   serviceMonitorSelector: {}
-  version: 2.26.0
+  version: 2.31.1
 ---
 # prometheus-service.yaml
 apiVersion: v1

[inductor]

Hi, could you check about compatibility about this one too?

[mayocream]

2.29.0 / 2021-08-11

[CHANGE] Promote --storage.tsdb.allow-overlapping-blocks flag to stable. #9117
[CHANGE] Promote --storage.tsdb.retention.size flag to stable. #9004

2.27.0 / 2021-05-12

[CHANGE] Remote write: Metric prometheus_remote_storage_samples_bytes_total renamed to prometheus_remote_storage_bytes_total. #8296

互換性に影響がないみたい。

@inductor

[inductor]

@mayocream Please validate the changes on staging and then make a PR for production too.