[stable/datadog] Fix system-probe startup on latest versions of containerd (#21526)

Here is the error that this change fixes:
```
  State:          Waiting
    Reason:       CrashLoopBackOff
  Last State:     Terminated
    Reason:       StartError
    Message:      failed to create containerd task: OCI runtime create failed: container_linux.go:349: starting container process caused "close exec fds: ensure /proc/self/fd is on procfs: operation not permitted": unknown
    Exit Code:    128
 ```

Signed-off-by: Lénaïc Huard <lenaic.huard@datadoghq.com>

stable/datadog/CHANGELOG.md

@@ -2,6 +2,18 @@
 
 ## 2.0
 
+## 2.0.13
+
+* Fix `system-probe` startup on latest versions of containerd.
+  Here is the error that this change fixes:
+  ```    State:          Waiting
+      Reason:       CrashLoopBackOff
+    Last State:     Terminated
+      Reason:       StartError
+      Message:      failed to create containerd task: OCI runtime create failed: container_linux.go:349: starting container process caused "close exec fds: ensure /proc/self/fd is on procfs: operation not permitted": unknown
+      Exit Code:    128
+   ```
+
 ## 2.0.11
 
 * Add missing syscalls in the `system-probe` seccomp profile

stable/datadog/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: datadog
-version: 2.0.12
+version: 2.0.13
 appVersion: "7"
 description: Datadog Agent
 keywords:

stable/datadog/templates/system-probe-configmap.yaml

@@ -78,6 +78,7 @@ data:
             "fcntl64",
             "fstat",
             "fstat64",
+            "fstatfs",
             "fsync",
             "futex",
             "getcwd",