chore: bump release.yaml + liccheck + gitignore for OA 0.21.26 canonicals

Review missed three pin sites outside the diffed packages:

- .github/workflows/release.yaml: bumped 3 valory/open-autonomy-user
  docker image tags 0.21.23 -> 0.21.26 (lines 18, 55, 98) and the
  two `autonomy build-image -e open-autonomy==0.21.23` args (lines
  68, 111). Without the bump a release cut from this branch would
  build images on the old toolchain while packages inside expect
  0.21.26.

- tox.ini:77: `[Authorized Packages]` liccheck entry
  open-autonomy 0.21.23 -> 0.21.26. `tomte tox -e liccheck` (via
  .github/workflows/common_checks.yaml:67) matches this as an
  exact-version spec, so the mismatch would fail CI.

- .gitignore: added the three newly third-party contracts
  (mech_marketplace / balance_tracker /
  balance_tracker_fixed_price_native) alongside the existing
  ignored siblings so they don't reappear as untracked dirs after
  every `autonomy packages sync`.

Verification: autonomy packages lock --check green (text/CI-config
only, no package fingerprint changes).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: DIvyaNautiyal07

.github/workflows/release.yaml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v6
       - uses: maus007/docker-run-action-fork@v1
         with:
-          image: valory/open-autonomy-user:0.21.23
+          image: valory/open-autonomy-user:0.21.26
           options: -v ${{ github.workspace }}:/work
           shell: bash
           run: |
@@ -52,7 +52,7 @@ jobs:
       - uses: maus007/docker-run-action-fork@v1
         name: Build Images
         with:
-          image: valory/open-autonomy-user:0.21.23
+          image: valory/open-autonomy-user:0.21.26
           options: -v ${{ github.workspace }}:/work -e DOCKER_USER -e DOCKER_PASSWORD
           shell: bash
           run: |
@@ -65,7 +65,7 @@ jobs:
             cd $SERVICE || exit 1
             echo $DOCKER_PASSWORD | docker login -u $DOCKER_USER --password-stdin || exit 1
             docker buildx create --name multiarch-builder --driver docker-container --bootstrap --use
-            autonomy build-image --builder multiarch-builder --platform linux/amd64 --pre-install-command "apt update && apt upgrade -y && apt install -y libffi-dev libssl-dev" -e open-autonomy==0.21.23 --version $VERSION-amd64 --push || exit 1
+            autonomy build-image --builder multiarch-builder --platform linux/amd64 --pre-install-command "apt update && apt upgrade -y && apt install -y libffi-dev libssl-dev" -e open-autonomy==0.21.26 --version $VERSION-amd64 --push || exit 1
 
   publish-images-arm:
     name: Publish Docker Images (arm64 + arm/v7)
@@ -95,7 +95,7 @@ jobs:
       - uses: maus007/docker-run-action-fork@v1
         name: Build Images
         with:
-          image: valory/open-autonomy-user:0.21.23
+          image: valory/open-autonomy-user:0.21.26
           options: -v ${{ github.workspace }}:/work -e DOCKER_USER -e DOCKER_PASSWORD
           shell: bash
           run: |
@@ -108,7 +108,7 @@ jobs:
             cd $SERVICE || exit 1
             echo $DOCKER_PASSWORD | docker login -u $DOCKER_USER --password-stdin || exit 1
             docker buildx create --name multiarch-builder --driver docker-container --bootstrap --use
-            autonomy build-image --builder multiarch-builder --platform linux/arm64,linux/arm/v7 --pre-install-command "apt update && apt install -y libffi-dev libssl-dev && pip config set global.extra-index-url https://www.piwheels.org/simple" -e open-autonomy==0.21.23 --version $VERSION-arm --push || exit 1
+            autonomy build-image --builder multiarch-builder --platform linux/arm64,linux/arm/v7 --pre-install-command "apt update && apt install -y libffi-dev libssl-dev && pip config set global.extra-index-url https://www.piwheels.org/simple" -e open-autonomy==0.21.26 --version $VERSION-arm --push || exit 1
 
   merge-image-manifests:
     name: Merge Multi-arch Image Manifests

.gitignore

@@ -25,6 +25,9 @@ packages/valory/contracts/mech/
 packages/valory/contracts/gnosis_safe_proxy_factory/
 packages/valory/contracts/agent_mech/
 packages/valory/contracts/mech_marketplace_legacy/
+packages/valory/contracts/mech_marketplace/
+packages/valory/contracts/balance_tracker/
+packages/valory/contracts/balance_tracker_fixed_price_native/
 packages/valory/contracts/multisend/
 packages/valory/contracts/realitio/
 packages/valory/contracts/realitio_proxy/

tox.ini

@@ -74,7 +74,7 @@ ignore_missing_imports = True
 
 
 [Authorized Packages]
-open-autonomy: ==0.21.23
+open-autonomy: ==0.21.26
 anchorpy: 0.20.2
 based58: 0.1.1
 jsonalias: 0.1.1