Bump @actions/core to 1.9.1 (#56)

Fixes CVE-2022-35954. Does not look like anything terriblity important
to me, but hey, audit is happy.

node_modules/@actions/http-client/lib/auth.d.ts

@@ -0,0 +1,26 @@
+/// <reference types="node" />
+import * as http from 'http';
+import * as ifm from './interfaces';
+import { HttpClientResponse } from './index';
+export declare class BasicCredentialHandler implements ifm.RequestHandler {
+    username: string;
+    password: string;
+    constructor(username: string, password: string);
+    prepareRequest(options: http.RequestOptions): void;
+    canHandleAuthentication(): boolean;
+    handleAuthentication(): Promise<HttpClientResponse>;
+}
+export declare class BearerCredentialHandler implements ifm.RequestHandler {
+    token: string;
+    constructor(token: string);
+    prepareRequest(options: http.RequestOptions): void;
+    canHandleAuthentication(): boolean;
+    handleAuthentication(): Promise<HttpClientResponse>;
+}
+export declare class PersonalAccessTokenCredentialHandler implements ifm.RequestHandler {
+    token: string;
+    constructor(token: string);
+    prepareRequest(options: http.RequestOptions): void;
+    canHandleAuthentication(): boolean;
+    handleAuthentication(): Promise<HttpClientResponse>;
+}