Add FreeBSD testing to CI workflow

Included FreeBSD versions 13.4, 14.0, and 14.1 in the CI pipeline. Configured the workflow to harden the runner, checkout code, and run tests on the FreeBSD virtual machine.

.github/workflows/ci.yml

@@ -136,6 +136,31 @@ jobs:
             - name: Run go test
               run: |
                 go test -race -shuffle=on ./...
+    test-fbsd:
+        name: Test on FreeBSD ${{ matrix.osver }}
+        runs-on: ubuntu-latest
+        concurrency:
+            group: ci-test-freebsd-${{ matrix.osver }}
+            cancel-in-progress: true
+        strategy:
+            matrix:
+                osver: ['13.4', '14.0', '14.1']
+        steps:
+            - name: Harden Runner
+              uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
+              with:
+                  egress-policy: audit
+            - name: Checkout Code
+              uses: actions/checkout@61b9e3751b92087fd0b06925ba6dd6314e06f089 # master
+            - name: Run go test on FreeBSD
+              uses: vmactions/freebsd-vm@v1
+            - name: Run go test
+              with:
+                  usesh: true
+                  prepare: |
+                    pkg install -y go
+                  run: |
+                    go test -race -shuffle=on ./...
     reuse:
         name: REUSE Compliance Check
         runs-on: ubuntu-latest