May dependency bumps

[BenBarahona]

connects to: #587

Files changed

• updated .github/workflows/test.yml. to match prod's CI Postgres version
• mix.exs and mix.lock with all the deps updates

Dependency Bump summary:

Package	Old	New	Dependabot Branch
credo	1.7.15	1.7.18	#585
oban	2.20.2	2.21.1	#583
castore	1.0.17	1.0.18	#581
stream_data	1.2.0	1.3.0	#580
phoenix	1.8.3	1.8.5	#579
ecto_sql	3.13.4	3.13.5	#578
plug_cowboy	2.7.5	2.8.0	#574
ex_doc	0.39.3	0.40.1	#573
postgrex	0.21.1	0.22.0	#567