CI: Replace fuzzing with asan mode

.github/workflows/linux-build.yml

@@ -5,7 +5,6 @@ on:
   push:
     paths-ignore:
       - '.github/workflows/coverage.yml'
-      - '.github/workflows/linux-build-sanitizer.yml'
       - '.github/workflows/msys2-build.yml'
       - '.github/workflows/windows-build.yml'
       - '.gitignore'
@@ -21,7 +20,7 @@ jobs:
       matrix:
         os: [ubuntu-20.04]
         arch: [x86_64]
-        mode: [debug, releasedbg]
+        mode: [asan, debug, releasedbg]
 
     runs-on: ${{ matrix.os }}
     if: "!contains(github.event.head_commit.message, 'ci skip')"