chore: bump workload to v1.4.0

CONTRIBUTING.md

@@ -4,6 +4,6 @@
 
 ```bash
 rockcraft pack -v
-sudo skopeo --insecure-policy copy oci-archive:sdcore-gnbsim_1.3_amd64.rock docker-daemon:sdcore-gnbsim:1.3
-docker run sdcore-gnbsim:1.3
+sudo skopeo --insecure-policy copy oci-archive:sdcore-gnbsim_1.4.0_amd64.rock docker-daemon:sdcore-gnbsim:1.4.0
+docker run sdcore-gnbsim:1.4.0
 ```

README.md

@@ -5,6 +5,6 @@ Container image for SD-Core gnbsim.
 ## Usage
 
 ```console
-docker pull ghcr.io/canonical/sdcore-gnbsim:1.3
-docker run -it ghcr.io/canonical/sdcore-gnbsim:1.3
+docker pull ghcr.io/canonical/sdcore-gnbsim:1.4.0
+docker run -it ghcr.io/canonical/sdcore-gnbsim:1.4.0
 ```

rockcraft.yaml

@@ -1,7 +1,7 @@
 name: sdcore-gnbsim
 base: bare
 build-base: [email protected]
-version: '1.3'
+version: '1.4.0'
 summary: SD-Core gnbsim
 description: SD-Core gnbsim
 license: Apache-2.0
@@ -14,7 +14,7 @@ parts:
     plugin: go
     source: https://github.com/omec-project/gnbsim.git
     source-type: git
-    source-commit: 7da5c27f6bf83dccbee4eb2dbc5f6c26439c6099
+    source-tag: v1.4.0
     build-snaps:
       - go/1.22/stable
     organize: