Cancel old runs on the same PR on every new push (#4986)

Author: marta-lokhova

.github/workflows/build.yml

@@ -10,6 +10,10 @@ on:
       - testnet
       - acceptance-test-pass
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
 
   complete:

.github/workflows/clang-19-static-analysis.yml

@@ -10,6 +10,10 @@ on:
       - testnet
       - acceptance-test-pass
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   clang-19-compile:
     runs-on: ubuntu-latest-16-cores