github/workflows: update cross-platform-actions to v0.29.0 and freebsd

Bigger number better.

.github/workflows/build.yml

@@ -431,7 +431,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Test in OpenBSD VM
-      uses: cross-platform-actions/action@v0.28.0
+      uses: cross-platform-actions/action@v0.29.0
       with:
         operating_system: openbsd
         version: '7.7'
@@ -477,10 +477,10 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Test in FreeBSD VM
-      uses: cross-platform-actions/action@v0.28.0
+      uses: cross-platform-actions/action@v0.29.0
       with:
         operating_system: freebsd
-        version: '14.2'
+        version: '14.3'
         run: |
             sudo pkg update
             sudo pkg install -y \