CI AJA lib: link static library

In Linux, shared library has undefined references for mbedtls:
```
/usr/bin/ld: /usr/local/lib/libajantv2.so: undefined reference to `mbedtls_pk_load_file'
/usr/bin/ld: /usr/local/lib/libajantv2.so: undefined reference to `mbedtls_pem_init'
/usr/bin/ld: /usr/local/lib/libajantv2.so: undefined reference to `mbedtls_pem_read_buffer'
/usr/bin/ld: /usr/local/lib/libajantv2.so: undefined reference to `mbedtls_pem_free'
/usr/bin/ld: /usr/local/lib/libajantv2.so: undefined reference to `mbedtls_pk_parse_subpubkey'
```

occurs in U20.04 and Arch, not in U24.04

.github/scripts/install-common-deps.sh

@@ -40,7 +40,6 @@ download_build_aja() {
         export MACOSX_DEPLOYMENT_TARGET=10.13 # needed for arm64 mac
         cmake -DAJANTV2_DISABLE_DEMOS=ON  -DAJANTV2_DISABLE_DRIVER=ON \
                 -DAJANTV2_DISABLE_TOOLS=ON  -DAJANTV2_DISABLE_TESTS=ON \
-                -DAJANTV2_BUILD_SHARED=ON \
                 -DCMAKE_BUILD_TYPE=Release -Blibajantv2/build -Slibajantv2
         cmake --build libajantv2/build --config Release -j "$(nproc)"
 }