bump up python action and use its pip caching

.github/workflows/docs-test.yml

@@ -21,18 +21,10 @@ jobs:
           sudo apt install pandoc doxygen
 
       - name: Setup Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.10'
-
-      - name: Cache pip
-        uses: actions/cache@v3
-        with:
-          # this path is specific to Ubuntu
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
+          cache: "pip"
 
       - name: Install dependencies
         run: pip install -r ./requirements.txt

.github/workflows/flake8.yml

@@ -18,18 +18,10 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.10'
-
-      - name: Cache pip
-        uses: actions/cache@v3
-        with:
-          # this path is specific to Ubuntu
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
+          cache: "pip"
 
       - name: Install dependencies
         run: |

.github/workflows/gh-pages.yml

@@ -17,18 +17,10 @@ jobs:
           sudo apt install pandoc doxygen
 
       - name: Setup Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.10'
-
-      - name: Cache pip
-        uses: actions/cache@v3
-        with:
-          # this path is specific to Ubuntu
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
+          cache: "pip"
 
       - name: Install dependencies
         run: pip install -r ./requirements.txt

.github/workflows/isort.yml

@@ -18,18 +18,10 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Python 3.10
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.10'
-
-      - name: Cache pip
-        uses: actions/cache@v3
-        with:
-          # this path is specific to Ubuntu
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
+          cache: "pip"
 
       - name: Install dependencies + isort
         run: |

.github/workflows/pylint.yml

@@ -18,18 +18,10 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Python 3.10
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.10'
-
-      - name: Cache pip
-        uses: actions/cache@v3
-        with:
-          # this path is specific to Ubuntu
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
+          cache: "pip"
 
       - name: Install dependencies + pylint
         run: |

.github/workflows/pytest.yml

@@ -22,18 +22,10 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
-
-      - name: Cache pip
-        uses: actions/cache@v3
-        with:
-          # this path is specific to Ubuntu
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
+          cache: "pip"
 
       - name: Install dependencies
         run: |

.github/workflows/regtest.yml

@@ -22,18 +22,10 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
-
-      - name: Cache pip
-        uses: actions/cache@v3
-        with:
-          # this path is specific to Ubuntu
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
+          cache: "pip"
 
       - name: Install dependencies
         run: |