Escape changelog for YAML

With 1.17 releasing soon, we'll get to see if this was the issue very shortly.
Worst case scenario the yaml is still messed up, but since the changelog is now the last element, unless it's so badly malformed that the entire action can't run the file should still upload even if the changelog does not.

.github/workflows/release.yml

@@ -13,9 +13,6 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Set CurseForge Variables
-        run: . scripts/set_curseforge_env.sh
-
       - name: Fetch Github Release Asset
         uses: dsaltares/fetch-gh-release-asset@0.0.5
         with:
@@ -23,6 +20,9 @@ jobs:
           version: ${{ github.event.release.id }}
           file: OpenInv.jar
 
+      - name: Set CurseForge Variables
+        run: . scripts/set_curseforge_env.sh "${{ github.event.release.body }}"
+
       - name: Create CurseForge Release
         uses: itsmeow/curseforge-upload@v3
         with:
@@ -30,7 +30,8 @@ jobs:
           project_id: 31432
           game_endpoint: minecraft
           file_path: ./OpenInv.jar
-          changelog: ${{ github.event.release.body }}
-          display_name: ${{ github.event.release.name }}
-          game_versions: ${{ env.CURSEFORGE_MINECRAFT_VERSIONS }}
+          display_name: "${{ github.event.release.name }}"
+          game_versions: "${{ env.CURSEFORGE_MINECRAFT_VERSIONS }}"
           release_type: release
+          changelog_type: markdown
+          changelog: "${{ env.CURSEFORGE_CHANGELOG }}"

scripts/set_curseforge_env.sh

@@ -38,5 +38,18 @@ function get_curseforge_minecraft_versions() {
   echo "${minecraft_versions}"
 }
 
+# Modify provided changelog to not break when inserted into yaml file.
+function get_yaml_safe_changelog() {
+  changelog=$1
+  # Since we're using a flow scalar, newlines need to be doubled.
+  echo "${changelog//
+/
+
+}"
+}
+
 minecraft_versions=$(get_curseforge_minecraft_versions)
 echo "CURSEFORGE_MINECRAFT_VERSIONS=$minecraft_versions" >> "$GITHUB_ENV"
+
+changelog=$(get_yaml_safe_changelog "$1")
+printf "CURSEFORGE_CHANGELOG<<EOF\n%s\nEOF\n" "$changelog" >> "$GITHUB_ENV"