[BUG] Bugs in Conda activation command set up

[sfarrens]

Describe the bug
The current install_shapepipe script includes some bugs that cause issues for creating the shapepipe environment with some versions of Conda.

This issue stems from the following line:

  if [ "$CONDA_VERSION_MINOR" -gt 4 ]

which checks the minor version of Conda. This will continuously cause issues every time there is a new major release of Conda.

To Reproduce

./install_shapepipe

Expected behaviour
The shapepipe environment should be created.

[sfarrens]

I will open a PR to resolve this.