Bump cirq version to 1.2 (quantumlib#332)

* Bump cirq version

* Bump requirements.txt

Change-Id: Ib7d760f114d0c1199916a8cae9a4630eb18df7a9

.github/workflows/pythonpackage.yml

@@ -34,7 +34,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
         with:
-          python-version: '3.9'
+          python-version: '3.10'
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
@@ -62,6 +62,6 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
         with:
-          python-version: '3.9'
+          python-version: '3.10'
       - name: Doc check
         run: dev_tools/nbfmt

dev_tools/write-ci-requirements.py

@@ -8,9 +8,9 @@
 print('Repo dir:', REPO_DIR)
 
 CIRQ_VERSIONS = {
-    'previous': '==0.15.0',
-    'current': '==1.0.0',
-    'next': '>=1.1.0.dev',
+    'previous': '~=1.1.0',
+    'current': '~=1.2.0',
+    'next': '>=1.3.0.dev',
 }
 """Give names to relative Cirq versions so CI can have consistent names while versions 
 get incremented."""

requirements.txt

@@ -1,5 +1,5 @@
-cirq-core>=0.13.0
-cirq-google>=0.13.0
+cirq-core>=1.1.0
+cirq-google>=1.1.0
 # When changing Cirq requirements be sure to update dev_tools/write-ci-requirements.py
 
 seaborn