Bump actions/cache from 2.1.6 to 2.1.7 (#397)

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] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/archive.yml

@@ -30,7 +30,7 @@ jobs:
           target: wasm32-unknown-unknown
 
       - name: Cache Dependencies & Build Outputs
-        uses: actions/cache@v2.1.6
+        uses: actions/cache@v2.1.7
         with:
           path: |
             ~/.cargo/registry

.github/workflows/lint.yml

@@ -24,7 +24,7 @@ jobs:
           components: rustfmt, clippy
 
       - name: Cache Dependencies & Build Outputs
-        uses: actions/cache@v2.1.6
+        uses: actions/cache@v2.1.7
         with:
           path: |
             ~/.cargo/registry

.github/workflows/node-template.yml

@@ -30,7 +30,7 @@ jobs:
           target: wasm32-unknown-unknown
 
       - name: Cache Dependencies & Build Outputs
-        uses: actions/cache@v2.1.6
+        uses: actions/cache@v2.1.7
         with:
           path: |
             ~/.cargo/registry

.github/workflows/polkadot-archive.yml

@@ -30,7 +30,7 @@ jobs:
           target: wasm32-unknown-unknown
 
       - name: Cache Dependencies & Build Outputs
-        uses: actions/cache@v2.1.6
+        uses: actions/cache@v2.1.7
         with:
           path: |
             ~/.cargo/registry