Crash on generation of cache license dir in R/O installation when run with user privileges

If ScanCode is installed as a superuser/root in *nix environment and no previous cache is generated, first run as non-privileged user will crash

Easily reproducible:
- Compile and install scancode as root in any directory
- run scancode --version as user ( non privoleged )

Version tested: 30.1.0
Method if instlalation:
```sh
SCANCODE_VERSION="30.1.0"
SCANCODE_URL "https://github.com/nexB/scancode-toolkit/archive/refs/tags/"
mkdir -p /opt/scancode
curl -ksSL ${SCANCODE_URL}/v${SCANCODE_VERSION}.tar.gz | tar -C /opt/scancode -xz --strip-components=1 \
cd /opt/scancode || exit 1
PYTHON_EXE=python3 ./configure
# Clean up unneeded installed binaries
rm -rf /opt/scancode/thirdparty
```

Log output:
```
ort@b172a93c5fa5:~$ scancode --help
Traceback (most recent call last):
File "/usr/bin/scancode", line 33, in
sys.exit(load_entry_point('scancode-toolkit', 'console_scripts', 'scancode')())
File "/usr/bin/scancode", line 25, in importlib_load_entry_point
return next(matches).load()
File "/opt/python/versions/3.9.9/lib/python3.9/importlib/metadata.py", line 77, in load
module = import_module(match.group('module'))
File "/opt/python/versions/3.9.9/lib/python3.9/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1030, in _gcd_import
File "", line 1007, in _find_and_load
File "", line 972, in _find_and_load_unlocked
File "", line 228, in _call_with_frames_removed
File "", line 1030, in _gcd_import
File "", line 1007, in _find_and_load
File "", line 986, in _find_and_load_unlocked
File "", line 680, in _load_unlocked
File "", line 850, in exec_module
File "", line 228, in _call_with_frames_removed
File "/opt/scancode/src/scancode/__init__.py", line 16, in
from commoncode import fileutils
File "/opt/scancode/lib/python3.9/site-packages/commoncode/fileutils.py", line 21, in
from scancode_config import scancode_temp_dir as _base_temp_dir
File "/opt/scancode/src/scancode_config.py", line 151, in
_create_dir(licensedcode_cache_dir)
File "/opt/scancode/src/scancode_config.py", line 52, in _create_dir
os.makedirs(location)
File "/opt/python/versions/3.9.9/lib/python3.9/os.py", line 225, in makedirs
mkdir(name, mode)
PermissionError: [Errno 13] Permission denied: '/opt/scancode/src/licensedcode/data/cache'
```