Bump actions/upload-artifact from 3 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/bash.yml

@@ -85,7 +85,7 @@ jobs:
 
       - name: Upload artifact
         if: failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: Upload cylc-run artifact
           path: cylc-run

.github/workflows/test_fast.yml

@@ -70,7 +70,7 @@ jobs:
 
       - name: Upload failed tests artifact
         if: failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: cylc-run (${{ matrix.os }} py-${{ matrix.python-version }})
           path: ~/cylc-run/
@@ -81,7 +81,7 @@ jobs:
           coverage report
 
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: coverage_${{ matrix.os }}_py-${{ matrix.python-version }}
           path: coverage.xml

.github/workflows/test_functional.yml

@@ -259,7 +259,7 @@ jobs:
 
       - name: Upload failed tests artifact
         if: failure() && steps.test.outcome == 'failure'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: cylc-run (${{ steps.uploadname.outputs.uploadname }})
           path: ~/cylc-run/
@@ -297,7 +297,7 @@ jobs:
           coverage report
 
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: coverage_${{ steps.uploadname.outputs.uploadname }}
           path: coverage.xml