Pin codecov/codecov-action to v3.1.5

Author: hugovk

.github/workflows/test-cygwin.yml

@@ -142,7 +142,7 @@ jobs:
           bash.exe .ci/after_success.sh
 
       - name: Upload coverage
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v3.1.5
         with:
           file: ./coverage.xml
           flags: GHA_Cygwin

.github/workflows/test-docker.yml

@@ -101,7 +101,7 @@ jobs:
         MATRIX_DOCKER: ${{ matrix.docker }}
 
     - name: Upload coverage
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v3.1.5
       with:
         flags: GHA_Docker
         name: ${{ matrix.docker }}

.github/workflows/test-mingw.yml

@@ -82,7 +82,7 @@ jobs:
           python3 -m pytest -vx --cov PIL --cov Tests --cov-report term --cov-report xml Tests
 
       - name: Upload coverage
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v3.1.5
         with:
           file: ./coverage.xml
           flags: GHA_Windows

.github/workflows/test-windows.yml

@@ -202,7 +202,7 @@ jobs:
       shell: pwsh
 
     - name: Upload coverage
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v3.1.5
       with:
         file: ./coverage.xml
         flags: GHA_Windows

.github/workflows/test.yml

@@ -149,7 +149,7 @@ jobs:
         .ci/after_success.sh
 
     - name: Upload coverage
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v3.1.5
       with:
         flags: ${{ matrix.os == 'ubuntu-latest' && 'GHA_Ubuntu' || 'GHA_macOS' }}
         name: ${{ matrix.os }} Python ${{ matrix.python-version }}