Attempt to fix CI by pinning to the Ubuntu 22.04 image

Author: alex

.github/workflows/ci.yml

@@ -216,7 +216,7 @@ jobs:
                 name: libressl
                 version: 4.0.0
       name: ${{ matrix.target }}-${{ matrix.library.name }}-${{ matrix.library.version }}-${{ matrix.bindgen }}
-      runs-on: ubuntu-latest
+      runs-on: ubuntu-22.04
       env:
         OPENSSL_DIR: /opt/openssl
         CARGO_TARGET_ARM_UNKNOWN_LINUX_GNUEABIHF_LINKER: arm-linux-gnueabihf-gcc