Bump actions/setup-ruby from 1 to 1.1.3

Bumps [actions/setup-ruby](https://github.com/actions/setup-ruby) from 1 to 1.1.3.
- [Release notes](https://github.com/actions/setup-ruby/releases)
- [Commits](https://github.com/actions/setup-ruby/compare/v1...v1.1.3)

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
       uses: actions/checkout@v2.3.4
 
     - name: Set up Ruby ${{ matrix.ruby }}
-      uses: actions/setup-ruby@v1
+      uses: actions/setup-ruby@v1.1.3
       with:
         ruby-version: ${{ matrix.ruby }}
 

.github/workflows/gempush.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2.3.4
     - name: Set up Ruby 2.6
-      uses: actions/setup-ruby@v1
+      uses: actions/setup-ruby@v1.1.3
       with:
         ruby-version: 2.6.x