Build both toolchains in 1 job + Rename toolchain build job

.github/actions/run-tests/action.yml

@@ -2,10 +2,6 @@ name: run-tests
 description: 'Runs tests according to input parameters'
 
 inputs:
-  tools-version:
-    description: Which toolchain to build
-    required: false
-    default: 'riscv-tools'
   group-key:
     description: group key
     required: true
@@ -28,7 +24,6 @@ runs:
     - name: Build RTL
       uses: ./.github/actions/prepare-rtl
       with:
-        tools-version: ${{ inputs.tools-version }}
         group-key: ${{ inputs.group-key }}
 
     - name: Run RTL tests