merge: Install pygobject in dockerfile

Workaround for: https://github.com/dependabot/dependabot-core/issues/10070

.github/actions/merge/Dockerfile

@@ -7,7 +7,7 @@ RUN apt-get update && \
 ADD requirements.txt .
 
 RUN python -m venv /venv && \
-    /venv/bin/python -m pip install -r requirements.txt
+    /venv/bin/python -m pip install -r requirements.txt PyGObject
 
 FROM python:3.12-slim
 ENV PATH="/venv/bin:$PATH"

.github/actions/merge/requirements.in

@@ -2,4 +2,3 @@ gql[requests]
 pygit2
 PyGithub
 PyYAML
-PyGobject

.github/actions/merge/requirements.txt

@@ -2,7 +2,7 @@
 # This file is autogenerated by pip-compile with Python 3.12
 # by the following command:
 #
-#    pip-compile
+#    pip-compile .github/actions/merge/requirements.in
 #
 anyio==4.4.0
     # via gql
@@ -22,7 +22,7 @@ cryptography==43.0.1
 deprecated==1.2.14
     # via pygithub
 gql[requests]==3.5.0
-    # via -r requirements.in
+    # via -r .github/actions/merge/requirements.in
 graphql-core==3.2.3
     # via gql
 idna==3.7
@@ -32,22 +32,18 @@ idna==3.7
     #   yarl
 multidict==6.0.5
     # via yarl
-pycairo==1.26.1
-    # via pygobject
 pycparser==2.22
     # via cffi
 pygit2==1.15.0
-    # via -r requirements.in
+    # via -r .github/actions/merge/requirements.in
 pygithub==2.3.0
-    # via -r requirements.in
-pygobject==3.48.2
-    # via -r requirements.in
+    # via -r .github/actions/merge/requirements.in
 pyjwt[crypto]==2.8.0
     # via pygithub
 pynacl==1.5.0
     # via pygithub
 pyyaml==6.0.1
-    # via -r requirements.in
+    # via -r .github/actions/merge/requirements.in
 requests==2.32.3
     # via
     #   gql