Add fbsd13 target.

.github/workflows/selfhosted.yml

@@ -16,7 +16,17 @@ jobs:
       # We use a matrix in two parts: firstly all of the VMs are tested with the
       # default config.  "vm" corresponds to a label associated with the worker.
       matrix:
-        os: [bbone, dfly30, dfly48, dfly58, fbsd6, fbsd7, fbsd12, sol10, sol11]
+        os:
+          - bbone
+          - dfly30
+          - dfly48
+          - dfly58
+          - fbsd6
+          - fbsd7
+          - fbsd12
+          - fbsd13
+          - sol10
+          - sol11
         configs:
           - default
         # Then we include any extra configs we want to test for specific VMs.
@@ -27,6 +37,7 @@ jobs:
          - { os: fbsd6,  configs: pam }
          - { os: fbsd7,  configs: pam }
          - { os: fbsd12, configs: pam }
+         - { os: fbsd13, configs: pam }
          - { os: sol10,  configs: pam }
          - { os: sol11,  configs: pam }
          - { os: sol11,  configs: sol64 }