Installing swift 5.6 fails with gpg error

[Andrewangeta]

Describe the bug
When specifying swift 5.6 as the target swift version, there is a gpg error where it cannot continue
Yaml being used:

jobs:
  linux:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        swift-version: ['5.6', '5.7', '5.7.1', '5.7.2']
        mongodb-version: ['4.2', '4.4', '5.0', '6.0']
    steps:
     - name: Check out  
       uses: actions/checkout@v3
        
     - name: Install Swift
       uses: swift-actions/setup-swift@v1
       with:
         swift-version: ${{ matrix.swift-version }}
        
     - name: Start MongoDB
       uses: supercharge/mongodb-github-action@1.8.0
       with:
         mongodb-version: ${{ matrix.mongodb-version }}
         mongodb-replica-set: mk-rs
        
     - name: Run tests
       run: swift test

Workflow configuration (please complete the following information):

• Action version (uses): swift-actions/setup-swift@v1
• Platform (runs-on): ubuntu-latest
• Swift version (swift-version): 5.6