Move semver checks to a separate workflow

.github/workflows/ci.yml

@@ -101,12 +101,3 @@ jobs:
         env:
           RUSTDOCFLAGS: "-D rustdoc::all -A rustdoc::private_intra_doc_links"
         run: cargo doc --all-features
-
-  check_semver:
-    name: Semver
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: Swatinem/rust-cache@v2
-      - name: Check semver
-        uses: obi1kenobi/cargo-semver-checks-action@v2

.github/workflows/semver.yml

@@ -0,0 +1,24 @@
+# A separate workflow to check semver compatibility. This is in a separate workflow
+# to avoid semver check failures (which will always happen when we're intentionally working on a
+# new set of breaking changes) from making it look like our CI checks are failing.
+
+name: Semver
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  check_semver:
+    name: Check Semver
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: Swatinem/rust-cache@v2
+      - name: Check semver
+        uses: obi1kenobi/cargo-semver-checks-action@v2