mass update of upstream docker tags

[dpark01]

Update dependencies:

• broadinstitute/viral-core: 2.1.33 -> 2.2.4
• broadinstitute/viral-classify: 2.1.33.0 -> 2.2.3.0
• broadinstitute/viral-baseimage: 0.1.20 -> 0.2.0
• broadinstitute/ncbi-tools: 2.10.7.10 -> 2.11.1
• staphb/vadr: 1.5.1 -> 1.6.3
• staphb/pangolin: 4.3.1-pdata-1.22 -> 4.3.1-pdata-1.23.1
• nextstrain/nextclade: 2.12.0 -> 2.14.0

Introduce a little disk cleanup in the Github Actions VM prior to big tests.