Remove in-repo GitHub Action (#25)

* Remove in-repo GitHub Action

We've moved it to its own repo https://github.com/boostsecurityio/poutine-action

Signed-off-by: François Proulx <[email protected]>

* Delete Dockerfile.action

Signed-off-by: François Proulx <[email protected]>

* Update pop.yml

Signed-off-by: François Proulx <[email protected]>

* Update pop.yml

Signed-off-by: François Proulx <[email protected]>

---------

Signed-off-by: François Proulx <[email protected]>

Author: fproulx-boostsecurity

.github/workflows/pop.yml

@@ -31,10 +31,9 @@ jobs:
           codeload.github.com:443
           objects.githubusercontent.com:443
     - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
-    - uses: ./
+    - uses: boostsecurityio/poutine-action@main # Dogfood the latest action
       name: "Run poutine on poutine's own codebase"
       id: self-test
-
     - name: Upload SARIF file
       uses: github/codeql-action/upload-sarif@4355270be187e1b672a7a1c7c7bae5afdc1ab94a # v3.24.10
       with: