Bump tj-actions/changed-files from 42.0.2 to 42.0.4 (#43)

Bumps [tj-actions/changed-files](https://github.com/tj-actions/changed-files) from 42.0.2 to 42.0.4.
- [Release notes](https://github.com/tj-actions/changed-files/releases)
- [Changelog](https://github.com/tj-actions/changed-files/blob/main/HISTORY.md)
- [Commits](tj-actions/changed-files@v42.0.2...v42.0.4)

---
updated-dependencies:
- dependency-name: tj-actions/changed-files
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/black.yml

@@ -18,7 +18,7 @@ jobs:
 
       - name: Check for changes in source code
         id: changed-files
-        uses: tj-actions/[email protected].2
+        uses: tj-actions/[email protected].4
         with:
           files: |
             purpleair_api/*.py

.github/workflows/sphinx_build.yml

@@ -18,7 +18,7 @@ jobs:
 
       - name: Check for changes in source code
         id: changed-files
-        uses: tj-actions/[email protected].2
+        uses: tj-actions/[email protected].4
         with:
           files: |
             sphinx_docs_build/source/*.rst

.github/workflows/tests.yml

@@ -18,7 +18,7 @@ jobs:
 
       - name: Check for changes in source code
         id: changed-files
-        uses: tj-actions/[email protected].2
+        uses: tj-actions/[email protected].4
         with:
           files: |
             purpleair_api/*.py