bug: some dependencies in setup script wrong

Trying out the great idea from #2926, I noticed, that some of the dependencies have the wrong path.

## Issue

In `/this_acts_withdeps.sh` I get the following code:

```shell
if [[ -d "/opt/hep/root/6.30.02/cmake" ]]; then
. /opt/hep/root/6.30.02/bin/thisroot.sh
fi
if [[ -d "/opt/hep/geant4/11.2.0/lib/cmake/Geant4" ]]; then
. /../../bin/geant4.sh
fi
if [[ -d "/opt/hep/dd4hep/01-27-02/cmake" ]]; then
. /../bin/thisdd4hep.sh
fi
```

The setup for root points to the correct file, Geant4 and DD4hep have a broken path.

## Possible solution

The solution here would work for my local setup:
https://github.com/AJPfleger/acts/tree/fix-deps

it basically changes in https://github.com/acts-project/acts/blob/main/cmake/setup_withdeps.sh.in
```shell
if [[ -d "@Geant4_DIR@" ]]; then
. @Geant4_INCLUDE_DIR@/../../bin/geant4.sh
fi
if [[ -d "@DD4hep_DIR@" ]]; then
. @DD4hep_INCLUDE_DIRS@/../bin/thisdd4hep.sh
fi
```
to
```shell
if [[ -d "@Geant4_DIR@" ]]; then
. @Geant4_DIR@/../../../bin/geant4.sh
fi
if [[ -d "@DD4hep_DIR@" ]]; then
. @DD4hep_DIR@/../bin/thisdd4hep.sh
fi
```
Let's check with different setups.