build(deps): bump actions/cache from 2.1.6 to 2.1.7

Bumps [actions/cache](https://github.com/actions/cache) from 2.1.6 to 2.1.7.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2.1.6...v2.1.7)

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

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

Author: dependabot[bot]

.github/workflows/mypy.yml

@@ -17,7 +17,7 @@ jobs:
       uses: actions/[email protected]
       with:
         python-version: 3.8
-    - uses: actions/[email protected].6
+    - uses: actions/[email protected].7
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements*.txt') }}

.github/workflows/pylint.yml

@@ -17,7 +17,7 @@ jobs:
       uses: actions/[email protected]
       with:
         python-version: 3.8
-    - uses: actions/[email protected].6
+    - uses: actions/[email protected].7
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements*.txt') }}

.github/workflows/pythonapp.yml

@@ -28,7 +28,7 @@ jobs:
       uses: actions/[email protected]
       with:
         python-version: ${{ matrix.python-ver }}
-    - uses: actions/[email protected].6
+    - uses: actions/[email protected].7
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-${{ matrix.python-ver }}-pip-${{ hashFiles('**/requirements.txt') }}