github-ci: for codecov netns check, account for cargo build dir

It's not in /root/ like with container based builds.

.github/workflows/builds.yml

@@ -2084,11 +2084,11 @@ jobs:
       - run: llvm-profdata-19 merge -o nfq-ips-workers.profdata /tmp/nfq-ips-workers.profraw
 
       - run: llvm-profdata-19 merge -o combined.profdata afp-ips.profdata nfq-ips.profdata afp-ips-autofp.profdata nfq-ips-workers.profdata afp-ips-bond1.profdata afp-ips-bond2.profdata
-      - run: llvm-cov-19 export ./src/suricata -instr-profile=combined.profdata -format=lcov --ignore-filename-regex="^/root/.*" > coverage.lcov
+      - run: llvm-cov-19 export ./src/suricata -instr-profile=combined.profdata -format=lcov --ignore-filename-regex="^/github/home/.cargo/.*" > coverage.lcov
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@671740ac38dd9b0130fbe1cec585b89eea48d3de
         with:
-          fail_ci_if_error: false
+          fail_ci_if_error: true
           files: coverage.lcov
           flags: netns
           verbose: true