chore(deps): bump actions/cache from v2 to v2.1.4 (bootstrap-vue#6432)

Bumps [actions/cache](https://github.com/actions/cache) from v2 to v2.1.4.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2...26968a0)

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

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

Author: dependabot[bot]

.github/workflows/build.yml

@@ -33,7 +33,7 @@ jobs:
         run: echo "::set-output name=dir::$(yarn cache dir)"
 
       - name: Cache node_modules
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
           key: ${{ matrix.os }}-node-v${{ matrix.node }}-yarn-${{ hashFiles('**/yarn.lock') }}

.github/workflows/test.yml

@@ -33,7 +33,7 @@ jobs:
         run: echo "::set-output name=dir::$(yarn cache dir)"
 
       - name: Cache node_modules
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
           key: ${{ matrix.os }}-node-v${{ matrix.node }}-yarn-${{ hashFiles('**/yarn.lock') }}
@@ -70,7 +70,7 @@ jobs:
         run: echo "::set-output name=dir::$(yarn cache dir)"
 
       - name: Cache node_modules
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
           key: ${{ matrix.os }}-node-v${{ matrix.node }}-yarn-${{ hashFiles('**/yarn.lock') }}
@@ -107,7 +107,7 @@ jobs:
         run: echo "::set-output name=dir::$(yarn cache dir)"
 
       - name: Cache node_modules
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
           key: ${{ matrix.os }}-node-v${{ matrix.node }}-yarn-${{ hashFiles('**/yarn.lock') }}