Update CI to test Rust 1.82 (ICU4X 2.0 MSRV) and to downgrade idna_adapter on Rust 1.67

Author: hsivonen

.github/workflows/main.yml

@@ -15,12 +15,16 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        rust: [1.63.0, 1.67.0, stable, beta, nightly]
+        rust: [1.63.0, 1.67.0, 1.82.0, stable, beta, nightly]
         exclude:
           - os: macos-latest
             rust: 1.67.0
+          - os: macos-latest
+            rust: 1.82.0
           - os: windows-latest
             rust: 1.67.0
+          - os: windows-latest
+            rust: 1.82.0
           - os: macos-latest
             rust: beta
           - os: windows-latest
@@ -45,6 +49,7 @@ jobs:
         if: |
           matrix.rust == '1.67.0'
         run: |
+          cargo update -p idna_adapter --precise 1.2.0
           cargo update -p zerofrom --precise 0.1.4
           cargo update -p yoke --precise 0.7.4
           cargo update -p litemap --precise 0.7.3