Fix prepare release script (#2019)

# Summary
- No additional file gets created on release preparation

# Ticket

<ticket>
COIOS-000
</ticket>

---------

Co-authored-by: Alex Guretzki <[email protected]>

.github/workflows/get_release_notes.yml

@@ -65,7 +65,7 @@ jobs:
              IFS="" echo "$OUTPUT" >> $GITHUB_STEP_SUMMARY
 
              # Converting the output to Base64 to get a single line required by the GITHUB_OUTPUT
-             BASE64_RELEASE_NOTES=$(echo "$OUTPUT" | base64)
+             BASE64_RELEASE_NOTES=$(echo "$OUTPUT" | base64 | tr -d '\n')
              echo "Base64 Release Notes: $BASE64_RELEASE_NOTES"
              IFS="" echo "RELEASE_NOTES=$BASE64_RELEASE_NOTES" >> $GITHUB_OUTPUT
           fi

.github/workflows/prepare_release.yml

@@ -46,8 +46,18 @@ jobs:
     - name: Prepare Release Notes
       run: |
         RELEASE_NOTES=$(echo "$BASE_64_RELEASE_NOTES" | base64 --decode)
-        rm -rf "${{ github.workspace }}/release_notes.md" # Making sure we start a fresh document
-        echo "$RELEASE_NOTES" >> "${{ github.workspace }}/release_notes.md"
+        TMP_DIR="${{ github.workspace }}/.tmp"
+        RELEASE_NOTES_FILE_PATH="$TMP_DIR/release_notes.md"
+        
+        if [ -e $RELEASE_NOTES_FILE_PATH ]
+        then
+            echo "OLD RELEASE NOTES"
+            cat "$RELEASE_NOTES_FILE_PATH"
+            rm -rf $RELEASE_NOTES_FILE_PATH # Making sure we start a fresh document
+        fi
+
+        mkdir -p "$TMP_DIR"
+        echo "$RELEASE_NOTES" >> $RELEASE_NOTES_FILE_PATH
       env:
         BASE_64_RELEASE_NOTES: ${{ needs.get-release-notes.outputs.RELEASE_NOTES }}
 
@@ -59,5 +69,5 @@ jobs:
         branch: "release/${{ github.event.inputs.sdk-version }}"
         commit-message: "chore: prepare '${{ github.event.inputs.sdk-version }}' release"
         title: "[Release] ${{ github.event.inputs.sdk-version }}"
-        body-path: "${{ github.workspace }}/release_notes.md"
+        body-path: "${{ github.workspace }}/.tmp/release_notes.md"
         token: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -42,3 +42,4 @@ Package.resolved
 TempProject/
 .build
 .vscode
+.tmp