[submodule] Update submodule sonic-host-services to the latest HEAD automatically (#15591)

#### Why I did it
src/sonic-host-services
```
* eab4a9e - (HEAD -> master, origin/master, origin/HEAD) [hostcfgd][dns] Subscribe to DNS_NAMESERVER table to react to static DNS configuration changes. (#49) (2 days ago) [Oleksandr Ivantsiv]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld 2023-06-25 16:35:57 +08:00 committed by GitHub
parent 05aa404e12
commit 2f4cd3ac72
No known key found for this signature in database
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@ -1 +1 @@
Subproject commit 508d642f58665dd1925fe2a1eb6e9d7b368c7dda
Subproject commit eab4a9ee30be81da70d38f1320c37caef261e7e3