[Backport 1.0.latest] be less explicit in source regex (#9938)

* be less explicit (#9936)

* 1.0 build without the core suffix but we want to ignore it

.github/workflows/main.yml

@@ -204,7 +204,7 @@ jobs:
       - name: Install source distributions
         # ignore dbt-1.0.0, which intentionally raises an error when installed from source
         run: |
-          find ./dist/dbt_[a-z]*.gz -maxdepth 1 -type f | xargs python -m pip install --force-reinstall --find-links=dist/
+          find ./dist/dbt[-_][a-z]*.gz -maxdepth 1 -type f | xargs python -m pip install --force-reinstall --find-links=dist/
 
       - name: Check source distributions
         run: |