Bump dbt and plugins to 1.9.x, bump Meltano to 3.6, merge venvs #150

Job	Run time
read-env / reusable-read-env	3s
build-images / build-and-push-custom-meltano-image / build-meltano	1m 27s
build-images / build-and-push-custom-dbt-image / build-dbt	40s
build-images / build-and-push-custom-gooddata-image / build-gooddata	46s
elta / extract-load / extract-load (github)	1m 10s
elta-labs-motherduck / extract-load / extract-load (github)	1m 6s
elta / extract-load / extract-load (faa)	43s
elta-cloud / extract-load / extract-load (github)	1m 13s
elta-labs-motherduck / extract-load / extract-load (faa)	45s
elta-cloud / extract-load / extract-load (faa)	57s
elta / extract-load / extract-load (ecommerce_demo)	45s
elta-labs-motherduck / extract-load / extract-load (ecommerce_demo)	43s
elta-cloud / extract-load / extract-load (ecommerce_demo)	57s
elta / extract-load / extract-load (data_science)	55s
elta-labs-motherduck / extract-load / extract-load (data_science)	44s
elta-cloud / extract-load / extract-load (data_science)	1m 15s
elta / extract-load / extract-load (jira)	2m 53s
elta-labs-motherduck / extract-load / extract-load (jira)	2m 35s
elta-cloud / extract-load / extract-load (jira)	2m 50s
elta-labs-motherduck / transform / transform	50s
elta-cloud / transform / transform	2m 5s
elta / transform / transform	1m 42s
elta-labs-motherduck / analytics / analytics	44s
elta / analytics / analytics	2m 18s
elta-cloud / analytics / analytics	47s
	30m 53s

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