Add 'sudo apt-get update' to the build image step

Signed-off-by: Jacinta Ferrant <[email protected]>

.github/workflows/bitcoin-tests.yml

@@ -31,6 +31,7 @@ jobs:
       - name: Reclaim disk space
         id: cleanup
         run: |
+          sudo apt-get update
           sudo apt-get remove -y '^dotnet-.*'
           sudo apt-get remove -y '^llvm-.*'
           sudo apt-get remove -y 'php.*'