update gh actions, fix codecov hopefully

v4 of codecov action should allow for forks to work better.  Also make it not fail CI just to be sure

.github/workflows/main.yml

@@ -39,7 +39,7 @@ jobs:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v4
 
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
           allow-prereleases: true
@@ -55,9 +55,9 @@ jobs:
         run: tox --skip-missing-interpreters false -e py`echo ${{ matrix.python-version }} | sed s/\\\.// | sed s/pypy/py/ | sed s/-dev//`
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
-          fail_ci_if_error: true
+          fail_ci_if_error: false
           flags: tests-${{ matrix.python-version }}
           name: codecov-umbrella
           verbose: true