Add the overwrite flag when init-ing databases

This ensures that if there is a database already in the filesystem, we
can gracefully handle creating a new one. This sometimes happens when
a user is on a self-hosted runner and neglects to clean state across
runs.

CHANGELOG.md

@@ -6,7 +6,7 @@ Note that the only difference between `v2` and `v3` of the CodeQL Action is the
 
 ## [UNRELEASED]
 
-No user facing changes.
+- Automatically overwrite an existing database if found on the filesystem. [#2229](https://github.com/github/codeql-action/pull/2229)
 
 ## 3.24.10 - 05 Apr 2024
 

lib/codeql.js

@@ -301,6 +301,7 @@ async function getCodeQLForCmd(cmd, checkVersion) {
             await runTool(cmd, [
                 "database",
                 "init",
+                "--overwrite",
                 "--db-cluster",
                 config.dbLocation,
                 `--source-root=${sourceRoot}`,

src/codeql.ts

@@ -634,6 +634,7 @@ export async function getCodeQLForCmd(
         [
           "database",
           "init",
+          "--overwrite",
           "--db-cluster",
           config.dbLocation,
           `--source-root=${sourceRoot}`,