Update NetBird package versions in pfSense installation guide (#420)

Author: mlsmaycon

src/pages/how-to/installation/pfsense.mdx

@@ -25,19 +25,19 @@ This installation is intended for early adopters while the pfSense package is un
 
    From a shell on your pfSense system, run:
    ```sh
-   fetch https://github.com/netbirdio/pfsense-netbird/releases/download/v0.1.0/netbird-0.49.0.pkg
+   fetch https://github.com/netbirdio/pfsense-netbird/releases/download/v0.1.2/netbird-0.55.1.pkg
    ```
 3. **Download the NetBird pfSense package**
 
    From a shell on your pfSense system, run:
    ```sh
-   fetch https://github.com/netbirdio/pfsense-netbird/releases/download/v0.1.0/pfSense-pkg-NetBird-0.1.0.pkg
+   fetch https://github.com/netbirdio/pfsense-netbird/releases/download/v0.1.2/pfSense-pkg-NetBird-0.1.0.pkg
    ```
 
 4. **Install the packages**
 
    ```sh
-   pkg add -f netbird-0.49.0.pkg
+   pkg add -f netbird-0.55.1.pkg
    pkg add -f pfSense-pkg-NetBird-0.1.0.pkg
    ```
 
@@ -74,7 +74,7 @@ Use this section for diagnostics and troubleshooting common connection or setup
 From a shell on your pfSense system, run:
 <p>
 ```sh
-pkg delete netbird-0.49.0 pfSense-pkg-NetBird-0.1.0
+pkg delete netbird-0.55.1 pfSense-pkg-NetBird-0.1.0
 ```
 </p>