Bump enthought/setup-edm-action from 3 to 4

Bumps [enthought/setup-edm-action](https://github.com/enthought/setup-edm-action) from 3 to 4.
- [Release notes](https://github.com/enthought/setup-edm-action/releases)
- [Commits](enthought/setup-edm-action@v3...v4)

---
updated-dependencies:
- dependency-name: enthought/setup-edm-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/ets-from-source.yml

@@ -33,7 +33,7 @@ jobs:
           path: ~/.cache
           key: ${{ runner.os }}-${{ matrix.runtime }}-${{ matrix.toolkit }}-${{ hashFiles('etstool.py') }}
       - name: Set up EDM
-        uses: enthought/setup-edm-action@v3
+        uses: enthought/setup-edm-action@v4
         with:
           edm-version: ${{ env.INSTALL_EDM_VERSION }}
       - name: Set up bootstrap Python

.github/workflows/test-with-edm.yml

@@ -32,7 +32,7 @@ jobs:
           path: ~/.cache
           key: ${{ runner.os }}-${{ matrix.runtime }}-${{ matrix.toolkit }}-${{ hashFiles('etstool.py') }}
       - name: Set up EDM
-        uses: enthought/setup-edm-action@v3
+        uses: enthought/setup-edm-action@v4
         with:
           edm-version: ${{ env.INSTALL_EDM_VERSION }}
       - name: Set up bootstrap Python