Bump Codecov action to v5

It's more stable and requires a token that is already in the config.

Alpine needs Git because of a bug in codecov-action [[1]].

[1]: codecov/codecov-action#1320

.github/workflows/ci.yml

@@ -82,7 +82,7 @@ jobs:
           LSP: '${{ matrix.lsp }}'
           LSP_EXTRACT_FILE: '${{ matrix.lsp_extract_file }}'
       - if: always()
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v5
         with:
           directory: empty
           name: Windows (${{ matrix.python }}, ${{ matrix.arch }}${{ matrix.extra_name }})
@@ -137,7 +137,7 @@ jobs:
       - if: >-
           always()
           && matrix.check_formatting != '1'
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v5
         with:
           directory: empty
           name: Ubuntu (${{ matrix.python }}${{ matrix.extra_name }})
@@ -173,7 +173,7 @@ jobs:
       - name: Run tests
         run: ./ci.sh
       - if: always()
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v5
         with:
           directory: empty
           name: macOS (${{ matrix.python }})
@@ -191,9 +191,10 @@ jobs:
       - name: Install necessary packages
         # can't use setup-python because that python doesn't seem to work;
         # `python3-dev` (rather than `python:alpine`) for some ctypes reason,
+        # `git` for codecov-action v4/v5 to work (https://github.com/codecov/codecov-action/issues/1320).
         # `nodejs` for pyright (`node-env` pulls in nodejs but that takes a while and can time out the test).
         # `perl` for a platform independent `sed -i` alternative
-        run: apk update && apk add python3-dev bash nodejs perl
+        run: apk update && apk add python3-dev bash git nodejs perl
       - name: Enter virtual environment
         run: python -m venv .venv
       - name: Run tests
@@ -202,7 +203,7 @@ jobs:
         id: get-version
         run: echo "version=$(python -V | cut -d' ' -f2 | cut -d'.' -f1,2)" >> "${GITHUB_OUTPUT}"
       - if: always()
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v5
         with:
           directory: empty
           name: Alpine