Sometimes switching from a selected location to another location occurs

### Please answer the following question for yourself before submitting an issue

- [x] I checked to make sure that this issue has not already been filed

### AdGuard VPN CLI version

1.2.10 nightly

### Environment

- **OS:** Synology DSM 7.2.1-69057 Update 6
Linux version 4.4.302+ (root@build5) (gcc version 12.2.0 (GCC) ) #69057 SMP Fri Jan 12 17:02:28 CST 2024
- **Architecture:** x86_64

VPN config

Location: Ukraine, Kyiv

```
Current configuration:
Data directory: /root/.local/share/adguardvpn-cli
Mode: socks
SOCKS port: 1080
SOCKS host: 192.168.88.102
SOCKS username: adg
DNS upstream: https://d.adguard-dns.com/dns-query/xxxxxxx
Tunnel routing mode: none
Change system DNS: on
Crash reporting: on
Update channel: NIGHTLY
Use QUIC: off
Show hints: on
Debug logging: on
Show notifications: Default (off)
```

### Issue Details

**Steps to reproduce:**
1. Run AdGuard VPN in proxy mode
2. Connect by `adguardvpn-cli connect -l MD`
3. Make requests through the proxy during one day (or more)
4. After a while (a few hours or more), switching from a selected location to another location occurs (Kyiv in my case).

### Expected Behavior

No unexpected reconnections to another servers.

### Actual Behavior

After a while (a few hours or more), switching from a selected location to another location occurs.

### Screenshots

Screenshot 1

### Additional Information

**Logs:** search for `https://github.com/AdguardTeam/AdGuardVPNCLI/issues/84` in Slack (Sunday at 21:53 VPN chat).