CI: libajantv2 build workaround

workaround for aja-video/libajantv2 commit e760d416 (merged 2024-04-15)

The NL in VERSION.txt causes cmake fail (obviously the NL) is expanded
in cmake where it shouldn't:
```
$ cmake --build libajantv2/build --config Release -j 4
ajantv2/CMakeFiles/ajantv2.dir/build.make:1746: *** missing separator.  Stop.
gmake[1]: *** [CMakeFiles/Makefile2:174: ajantv2/CMakeFiles/ajantv2.dir/all] Error 2
gmake: *** [Makefile:136: all] Error 2
````

Author: MartinPulec

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

@@ -37,6 +37,9 @@ download_install_cineform() {(
 
 download_build_aja() {
         git clone --depth 1 https://github.com/aja-video/libajantv2.git
+        # TODO TOREMOVE this workaround when not needed
+        tr -d '\n' < libajantv2/VERSION.txt > ver-fix-no-NL$$.txt &&
+                mv ver-fix-no-NL$$.txt libajantv2/VERSION.txt
         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 \