Upgrade to Xcode 13.0.0

CircleCI announcement: https://discuss.circleci.com/t/xcode-13-rc-released/41256
Full software list: https://circle-macos-docs.s3.amazonaws.com/image-manifest/v6052/index.html

.circleci/config.yml

@@ -515,7 +515,7 @@ jobs:
 
   Check Swift formatting:
     macos:
-      xcode: "12.5.0"
+      xcode: "13.0.0"
     steps:
       - checkout
       - run:
@@ -531,12 +531,12 @@ jobs:
 
   iOS build and test:
     macos:
-      xcode: "12.5.0"
+      xcode: "13.0.0"
     steps:
       - checkout
       - run:
           name: Set Ruby Version
-          command: echo 'chruby ruby-2.7.3' >> ~/.bash_profile
+          command: echo 'chruby ruby-2.7.4' >> ~/.bash_profile
       - run:
           name: Show Ruby environment
           command: |
@@ -649,7 +649,7 @@ jobs:
 
   iOS integration test:
     macos:
-      xcode: "12.5.0"
+      xcode: "13.0.0"
     steps:
       - checkout
       - skip-if-doc-only
@@ -720,7 +720,7 @@ jobs:
 
   iOS Framework release:
     macos:
-      xcode: "12.5.0"
+      xcode: "13.0.0"
     steps:
       - checkout
       - attach_workspace:
@@ -957,7 +957,7 @@ jobs:
 
   pypi-macos-release:
     macos:
-      xcode: "12.5.0"
+      xcode: "13.0.0"
     steps:
       - install-rustup
       - setup-rust-toolchain
@@ -989,7 +989,7 @@ jobs:
 
   pypi-macos-arm64-release:
     macos:
-      xcode: "12.5.0"
+      xcode: "13.0.0"
     steps:
       - install-rustup
       - setup-rust-toolchain

CHANGELOG.md

@@ -7,6 +7,7 @@
 * iOS
   * Add support for the URL metric type ([#1791](https://github.com/mozilla/glean/pull/1791))
   * Remove reliance on `Operation` for uploading and instead use the background capabilities of `URLSession` ([#1783](https://github.com/mozilla/glean/pull/1783))
+  * Glean for iOS is now being built with Xcode 13.0.0 ([#1802](https://github.com/mozilla/glean/pull/1802)).
 * Rust
   * BUGFIX: No panic if trying to flush ping-lifetime data after shutdown ([#1800](https://github.com/mozilla/glean/pull/1800))