Update FreeBSD CI environment to 14.1

It just got released yesterday

Author: asomers

.cirrus.yml

@@ -15,7 +15,7 @@ task:
 task:
   name: nightly x86_64-unknown-freebsd-14
   freebsd_instance:
-    image: freebsd-14-0-release-amd64-ufs
+    image: freebsd-14-1-release-amd64-ufs
   setup_script:
     - pkg install -y libnghttp2 curl
     - curl https://sh.rustup.rs -sSf --output rustup.sh