Bump actions/cache from 2 to 4

Bumps [actions/cache](https://github.com/actions/cache) from 2 to 4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v2...v4)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/django.yaml

@@ -34,7 +34,7 @@ jobs:
         with:
           python-version: 3.9.4
       - name: Cache Pip
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ~/.cache/pip
           key: pip-${{ hashFiles('requirements.txt', 'requirements-test.txt') }}
@@ -58,7 +58,7 @@ jobs:
         with:
           python-version: 3.9.4
       - name: Cache Pip
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ~/.cache/pip
           key: pip-${{ hashFiles('requirements.txt') }}

.github/workflows/js.yaml

@@ -20,7 +20,7 @@ jobs:
         with:
           node-version: 12
       - name: Cache NPM
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ~/.npm
           key: npm-${{ hashFiles('package-lock.json') }}

.github/workflows/prettier.yaml

@@ -24,7 +24,7 @@ jobs:
         with:
           node-version: 12
       - name: Cache NPM
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v4
         with:
           path: ~/.npm
           key: npm-${{ hashFiles('package-lock.json') }}

.github/workflows/python.yaml

@@ -21,7 +21,7 @@ jobs:
         with:
           python-version: 3.8
       - name: Cache Pip
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v4
         with:
           path: ~/.cache/pip
           key: pip-${{ hashFiles('requirements.txt', 'requirements-test.txt') }}

.github/workflows/scss.yaml

@@ -20,7 +20,7 @@ jobs:
         with:
           node-version: 12
       - name: Cache NPM
-        uses: actions/cache@v2.1.4
+        uses: actions/cache@v4
         with:
           path: ~/.npm
           key: npm-${{ hashFiles('package-lock.json') }}

.github/workflows/templates.yaml

@@ -20,7 +20,7 @@ jobs:
         with:
           python-version: 3.8
       - name: Cache Pip
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v4
         with:
           path: ~/.cache/pip
           key: pip-${{ hashFiles('requirements-test.txt') }}