Update dependency cargo-tarpaulin to v0.26.0 (#6637)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/coverage.yml

@@ -8,7 +8,7 @@ on:
 
 env:
   # renovate: datasource=crate depName=cargo-tarpaulin versioning=semver
-  CARGO_TARPAULIN_VERSION: 0.25.2
+  CARGO_TARPAULIN_VERSION: 0.26.0
   # renovate: datasource=crate depName=diesel_cli versioning=semver
   DIESEL_CLI_VERSION: 2.1.0
   # renovate: datasource=github-releases depName=rust lookupName=rust-lang/rust