Bump actions/cache from 2.1.5 to 2.1.6 (#1290)

.github/workflows/master.yml

@@ -16,7 +16,7 @@ jobs:
           override: true
           profile: minimal
       - name: Cache cargo
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v2.1.6
         with:
           path: |
             target

.github/workflows/pull_request.yml

@@ -14,7 +14,7 @@ jobs:
           override: true
           profile: minimal
       - name: Cache cargo
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v2.1.6
         with:
           path: |
             target

.github/workflows/rust.yml

@@ -20,7 +20,7 @@ jobs:
           override: true
           profile: minimal
       - name: Cache cargo
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v2.1.6
         with:
           path: |
             target
@@ -43,7 +43,7 @@ jobs:
           override: true
           profile: minimal
       - name: Cache cargo build
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v2.1.6
         with:
           path: target
           key: ${{ runner.os }}-cargo-check-${{ hashFiles('**/Cargo.lock') }}
@@ -78,7 +78,7 @@ jobs:
           override: true
           profile: minimal
       - name: Cache cargo
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v2.1.6
         with:
           path: |
             target
@@ -108,7 +108,7 @@ jobs:
           override: true
           profile: minimal
       - name: Cache cargo
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v2.1.6
         with:
           path: target
           key: ${{ runner.os }}-cargo-test-${{ hashFiles('**/Cargo.lock') }}
@@ -160,7 +160,7 @@ jobs:
           profile: minimal
           components: clippy
       - name: Cache cargo
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v2.1.6
         with:
           path: |
             target
@@ -183,7 +183,7 @@ jobs:
           override: true
           profile: minimal
       - name: Cache cargo
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v2.1.6
         with:
           path: |
             target
@@ -206,7 +206,7 @@ jobs:
           override: true
           profile: minimal
       - name: Cache cargo
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v2.1.6
         with:
           path: |
             target

.github/workflows/test262.yml

@@ -26,7 +26,7 @@ jobs:
           override: true
           profile: minimal
       - name: Cache cargo
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v2.1.6
         with:
           path: |
             ./boa/target

.github/workflows/webassembly.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Install wasm-pack
         run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
       - name: Cache yarn build
-        uses: actions/cache@v2.1.5
+        uses: actions/cache@v2.1.6
         with:
           path: |
             node_modules