qa-tests: use the new dedicated runner for RPC testing (v3) (#14106)

Author: mriccobene

.github/workflows/qa-rpc-integration-tests.yml

@@ -15,7 +15,7 @@ on:
 
 jobs:
   integration-test-suite:
-    runs-on: [ self-hosted, Erigon3 ]
+    runs-on: [ self-hosted, RpcSpecific ]
     timeout-minutes: 15
     env:
       ERIGON_REFERENCE_DATA_DIR: /opt/erigon-versions/reference-version/datadir

.github/workflows/qa-rpc-performance-tests.yml

@@ -14,7 +14,7 @@ jobs:
       matrix:
         include:
           - chain: mainnet
-            backend: Erigon3
+            backend: RpcSpecific
           #- chain: bor-mainnet
           #  backend: Polygon
     runs-on: [ self-hosted, "${{ matrix.backend }}" ]