Try using ubuntu-20.04 image

.github/workflows/build_docker_image.yaml

@@ -14,7 +14,7 @@ permissions:
 jobs:
   build_and_push_docker_image:
     name: "Build Docker Images 🛠"
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         docker-image:

.github/workflows/docs.yaml

@@ -16,7 +16,7 @@ on:
 jobs:
   build-docs:
     name: "documentation"
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     defaults:
       run:
         working-directory: conda-store-server

.github/workflows/release.yaml

@@ -16,7 +16,7 @@ permissions:
 
 jobs:
   pypi-release:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     permissions:
       id-token: write # IMPORTANT: this permission is mandatory for trusted publishing
     strategy:

.github/workflows/tests.yaml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         # cannot run on windows due to needing fake-chroot for conda-docker
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-20.04, macos-latest]
     runs-on: ${{ matrix.os }}
     defaults:
       run:
@@ -26,7 +26,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set up Python (Linux)
-        if: matrix.os == 'ubuntu-latest'
+        if: matrix.os == 'ubuntu-20.04'
         uses: conda-incubator/setup-miniconda@v2
         with:
           mamba-version: "*"
@@ -56,7 +56,7 @@ jobs:
 
   integration-test-conda-store-server:
     name: "integration-test conda-store-server"
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     defaults:
       run:
         shell: bash -el {0}
@@ -110,7 +110,7 @@ jobs:
 
   test-conda-store:
     name: "integration-test conda-store"
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     defaults:
       run:
         working-directory: conda-store
@@ -176,7 +176,7 @@ jobs:
 
   build-docker-image:
     name: "Build docker images"
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         docker-image: