Don't install coverage, it's not needed (#8895)

Author: alex

.github/workflows/ci.yml

@@ -105,7 +105,7 @@ jobs:
           # pypy3-3.8 and pypy3-3.9 -- both of them show up as 7.3.11.
           key: ${{ matrix.PYTHON.VERSION }}-${{ steps.setup-python.outputs.python-version }}-${{ matrix.PYTHON.NOXSESSION }}-${{ env.OPENSSL_HASH }}
 
-      - run: python -m pip install -c ci-constraints-requirements.txt 'nox' coverage[toml]
+      - run: python -m pip install -c ci-constraints-requirements.txt 'nox'
       - name: Create nox environment
         run: |
             nox -v --install-only
@@ -182,7 +182,7 @@ jobs:
       - run: |
           echo "OPENSSL_FORCE_FIPS_MODE=1" >> $GITHUB_ENV
         if: matrix.IMAGE.FIPS
-      - run: /venv/bin/python -m pip install -c ci-constraints-requirements.txt 'nox' coverage
+      - run: /venv/bin/python -m pip install -c ci-constraints-requirements.txt 'nox'
       - run: '/venv/bin/nox -v --install-only -s tests'
         env:
           RUSTUP_HOME: /root/.rustup
@@ -229,7 +229,7 @@ jobs:
       - name: Clone wycheproof
         timeout-minutes: 2
         uses: ./.github/actions/wycheproof
-      - run: python -m pip install -c ci-constraints-requirements.txt 'nox' coverage[toml]
+      - run: python -m pip install -c ci-constraints-requirements.txt 'nox'
       - name: Create nox environment
         run: nox -v --install-only -s tests
         env:
@@ -304,7 +304,7 @@ jobs:
       - name: Clone wycheproof
         timeout-minutes: 2
         uses: ./.github/actions/wycheproof
-      - run: python -m pip install -c ci-constraints-requirements.txt 'nox' coverage[toml] cffi
+      - run: python -m pip install -c ci-constraints-requirements.txt 'nox' cffi
       - name: Create nox environment
         run: nox -v --install-only -s tests
         env:
@@ -379,7 +379,7 @@ jobs:
           python-version: ${{ matrix.PYTHON.VERSION }}
           architecture: 'x64' # we force this right now so that it will install the universal2 on arm64
 
-      - run: python -m pip install -c ci-constraints-requirements.txt 'nox' coverage[toml]
+      - run: python -m pip install -c ci-constraints-requirements.txt 'nox'
 
       - name: Clone wycheproof
         timeout-minutes: 2
@@ -442,7 +442,7 @@ jobs:
         timeout-minutes: 2
         with:
           key: ${{ matrix.PYTHON.NOXSESSION }}-${{ matrix.WINDOWS.ARCH }}-${{ steps.setup-python.outputs.python-version }}
-      - run: python -m pip install -c ci-constraints-requirements.txt "nox" coverage[toml]
+      - run: python -m pip install -c ci-constraints-requirements.txt "nox"
 
       - uses: dawidd6/action-download-artifact@246dbf436b23d7c49e21a7ab8204ca9ecd1fe615
         with: