fix: Pin poetry version and add export plugin.

Author: coire1

services/voting-node/Earthfile

@@ -21,7 +21,7 @@ builder:
             zlib1g-dev
 
     # Install Poetry
-    RUN curl -sSL https://install.python-poetry.org | python3 -
+    RUN curl -sSL https://install.python-poetry.org | python3 - --version 2.0.1
 
     SAVE IMAGE --cache-hint
 
@@ -42,6 +42,7 @@ deps:
     RUN poetry config installer.max-workers 10
     # Install package dependencies without the voting_node package
     RUN poetry install --only main --no-root
+    RUN poetry self add poetry-plugin-export
 
     # Copy the voting_node source code
     COPY --dir voting_node README.md ./

utilities/fragment-exporter/Earthfile

@@ -11,12 +11,13 @@ deps:
     RUN apt-get update && \
         apt-get install -y --no-install-recommends curl
 
-    RUN curl -sSL https://install.python-poetry.org | python3 -
+    RUN curl -sSL https://install.python-poetry.org | python3 - --version 2.0.1
 
     COPY pyproject.toml .
     COPY poetry.lock .
 
     RUN poetry install --only main --no-root
+    RUN poetry self add poetry-plugin-export
 
 src:
     FROM +deps

utilities/ideascale-importer/Earthfile

@@ -15,7 +15,7 @@ build:
         apt-get install -y --no-install-recommends curl build-essential libxml2-dev libxslt-dev zlib1g-dev python3-lxml
 
     # Install Poetry
-    RUN curl -sSL https://install.python-poetry.org | python3 -
+    RUN curl -sSL https://install.python-poetry.org | python3 - --version 2.0.1
 
     # Set path to poetry
     ENV PATH=/root/.local/bin:$PATH