renovate: Keep CARGO_TARPAULIN_VERSION automatically up-to-date

Author: Turbo87

.github/renovate.json5

@@ -18,6 +18,13 @@
         "labels": ["A-backend"],
     },
     "regexManagers": [
+        {
+            "fileMatch": ["^.github/workflows/[^\\.]+\\.ya?ml$"],
+            "matchStrings": ["CARGO_TARPAULIN_VERSION:\\s*(?<currentValue>.*?)\n"],
+            "depNameTemplate": "cargo-tarpaulin",
+            "datasourceTemplate": "crate",
+            "versioningTemplate": "semver"
+        },
         {
             "fileMatch": ["^.github/workflows/[^\\.]+\\.ya?ml$"],
             "matchStrings": ["DIESEL_CLI_VERSION:\\s*(?<currentValue>.*?)\n"],