Remove need for use of Seqera conda channels

### Description of feature

Seqera generated ARM builds for:

```
'seqera::rsem=1.3.3 bioconda::star=2.7.10a'
```
 
```
seqera::star=2.6.1d bioconda::samtools=1.21 conda-forge::gawk=5.1.0
```

This was because ARM builds were missing in Bioconda/ conda-forge.

In time, we should try and get those builds into public channels so we can remove the non-standard dependence on the seqera channel. 