fetch-and-ingest: Add Snakemake --stats output

Adding as part of #240 to help collect more data for tackling #446.

One unexpected behavior that I ran into when testing the `--stats`
option is that Snakemake doesn't generate the stats file if the
workflow exits with an error at any step.

Note that the Snakemake `--stats` option is not available starting with
Snakemake v8, so this will need to be removed when we eventually
upgrade Snakemake in our runtimes.

Author: joverlee521

.github/workflows/fetch-and-ingest-genbank-master.yml

@@ -108,5 +108,6 @@ jobs:
           --env SLACK_CHANNELS \
           --env PAT_GITHUB_DISPATCH="$GH_TOKEN_NEXTSTRAIN_BOT_WORKFLOW_DISPATCH" \
           . \
+            --stats snakemake_stats.json \
             --configfile config/genbank.yaml \
             $CONFIG_OVERRIDES

.github/workflows/fetch-and-ingest-gisaid-master.yml

@@ -109,5 +109,6 @@ jobs:
           --env SLACK_CHANNELS \
           --env PAT_GITHUB_DISPATCH="$GH_TOKEN_NEXTSTRAIN_BOT_WORKFLOW_DISPATCH" \
           . \
+            --stats snakemake_stats.json \
             --configfile config/gisaid.yaml \
             $CONFIG_OVERRIDES