fix(db_joins): Allow dplyr::join_by as by argument #1666

Job	Run time
⚙️ Context	1s
⚙️ Dispatch / ⚙️ Determine downstream workflow triggers	5s
⚙️ Dispatch / 🐞 Inspect trigger output	1s
⚙️ Dispatch / update-lockfile / 🛠️ Store dependency versions	1s
⚙️ Dispatch / render-readme	0s
⚙️ Dispatch / document / 📖 Document	1m 14s
⚙️ Dispatch / spell-checker	0s
⚙️ Dispatch / lint / 🖋️ Lint	1m 56s
⚙️ Dispatch / code-coverage / 🧪 Tests: SQL Server 2019	1m 47s
⚙️ Dispatch / code-coverage / 🧪 Tests: SQLite	1m 45s
⚙️ Dispatch / code-coverage / 🧪 Tests: DuckDB	1m 47s
⚙️ Dispatch / code-coverage / 🧪 Tests: SQLite - w. schemas	1m 38s
⚙️ Dispatch / code-coverage / 🧪 Tests: PostgreSQL	1m 57s
⚙️ Dispatch / pkgdown / 🧼 pkgdown: Clean up	0s
⚙️ Dispatch / pkgdown / 🔍 pkgdown: Determine if pre-release	2s
⚙️ Dispatch / R-CMD-check / 🔎 Check: macos (release)	1m 45s
⚙️ Dispatch / R-CMD-check / 🔎 Check: windows (release)	1m 41s
⚙️ Dispatch / R-CMD-check / 🔎 Check: ubuntu (release)	1m 43s
⚙️ Dispatch / R-CMD-check / 🔎 Check: ubuntu (release, no dependencies)	1m 44s
⚙️ Dispatch / R-CMD-check / 🔎 Check: ubuntu (oldrel-1)	1m 43s
⚙️ Dispatch / R-CMD-check / 🔎 Check: ubuntu (r-devel)	1m 43s
⚙️ Dispatch / pkgdown / 📖 pkgdown: Build	1m 43s
⚙️ Dispatch / pkgdown / 🚀 pkgdown: Deploy	1s
⚙️ Dispatch / code-coverage / 🧪 Tests: Upload to codecov.io	1s
	24m 18s

Provide feedback