Remove git credentials after checkout

.github/workflows/ci.yml

@@ -48,6 +48,7 @@ jobs:
             uses: actions/checkout@v3
             with:
               fetch-depth: 10
+              persist-credentials: false
 
           - name: Set up Python ${{ matrix.pyver }}
             uses: actions/setup-python@v4
@@ -75,6 +76,7 @@ jobs:
             uses: actions/checkout@v3
             with:
               fetch-depth: 0  # needed for :commit: docs role
+              persist-credentials: false
 
           - name: Test for trailing whitespace
             run: if grep -Inr '\s$' kitty kitty_tests kittens docs *.py *.asciidoc *.rst *.go .gitattributes .gitignore; then echo Trailing whitespace found, aborting.; exit 1; fi
@@ -143,6 +145,7 @@ jobs:
             uses: actions/checkout@v3
             with:
               fetch-depth: 10
+              persist-credentials: false
 
           - name: Install Go
             uses: actions/setup-go@v4
@@ -163,6 +166,7 @@ jobs:
             uses: actions/checkout@v3
             with:
               fetch-depth: 0  # needed for :commit: docs role
+              persist-credentials: false
 
           - name: Set up Python
             uses: actions/setup-python@v4
@@ -200,6 +204,7 @@ jobs:
             uses: actions/checkout@v3
             with:
               fetch-depth: 10
+              persist-credentials: false
 
           - name: Install build deps
             run: sudo apt-get update && sudo apt-get install -y curl xz-utils build-essential git pkg-config libxrandr-dev libxinerama-dev libxcursor-dev libxi-dev libgl1-mesa-dev libxkbcommon-x11-dev libfontconfig-dev libx11-xcb-dev libdbus-1-dev