Update to work with Pony 0.69.1

Author: SeanTAllen

.github/workflows/pr.yml

@@ -17,11 +17,11 @@ permissions:
   packages: read
 
 jobs:
-  vs-ponyc-release-linux:
-    name: Test against recent ponyc release on Linux
+  vs-ponyc-nightly-linux:
+    name: Test against recent ponyc nightly on Linux
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/ponylang/shared-docker-ci-standard-builder-with-openssl-3.6.2:release
+      image: ghcr.io/ponylang/shared-docker-ci-standard-builder-with-openssl-3.6.2:nightly
     steps:
       - uses: actions/checkout@v6.0.2
       - name: Test

.release-notes/update-for-pony-0.69.1.md

@@ -0,0 +1,3 @@
+## Update to work with Pony 0.69.1
+
+Pony 0.69.1 is the new minimum required version.

README.md

@@ -11,7 +11,7 @@ Additional API surface and functionality will be added as needed. If you need fu
 
 ## Installation
 
-* Requires ponyc 0.67.0 or later.
+* Requires ponyc 0.69.1 or later.
 * Install [corral](https://github.com/ponylang/corral)
 * `corral add github.com/ponylang/github_rest_api.git --version 0.8.0`
 * `corral fetch` to fetch your dependencies

corral.json

@@ -10,7 +10,7 @@
     },
     {
       "locator": "github.com/ponylang/courier.git",
-      "version": "0.6.0"
+      "version": "0.7.0"
     },
     {
       "locator": "github.com/ponylang/ssl.git",