Update compatibility matrix (#9)

github-actions[bot] · web-flow · commit 07e659ab8d2c · 2023-04-25T18:43:59.000+02:00
diff --git a/README.md b/README.md
@@ -72,15 +72,14 @@ These are made available to subsequent workflow steps via the [`GITHUB_ENV` envi
 Support for the GCC toolchain varies across GitHub-hosted runner images.
 
 <!-- compat starts -->
-| runner       | 5       | 6       | 7       | 8       | 9       | 10      | 11      | 12      |
-|:-------------|:--------|:--------|:--------|:--------|:--------|:--------|:--------|:--------|
-| macos-11     |      | &check; | &check; | &check; | &check; | &check; | &check; | &check; |
-| macos-12     |      | &check; | &check; | &check; | &check; | &check; | &check; | &check; |
-| ubuntu-18.04 | &check; | &check; | &check; | &check; | &check; | &check; | &check; |      |
-| ubuntu-20.04 |      |      | &check; | &check; | &check; | &check; | &check; |      |
-| ubuntu-22.04 |      |      |      |      | &check; | &check; | &check; | &check; |
-| windows-2019 |      |      |      | &check; | &check; | &check; | &check; | &check; |
-| windows-2022 |      |      |      | &check; | &check; | &check; | &check; | &check; |
+| runner       |   5 | 6       | 7       | 8       | 9       | 10      | 11      | 12      |
+|:-------------|----:|:--------|:--------|:--------|:--------|:--------|:--------|:--------|
+| macos-11     |  | &check; | &check; | &check; | &check; | &check; | &check; | &check; |
+| macos-12     |  | &check; | &check; | &check; | &check; | &check; | &check; | &check; |
+| ubuntu-20.04 |  |      | &check; | &check; | &check; | &check; | &check; |      |
+| ubuntu-22.04 |  |      |      |      | &check; | &check; | &check; | &check; |
+| windows-2019 |  |      |      | &check; | &check; | &check; | &check; | &check; |
+| windows-2022 |  |      |      | &check; | &check; | &check; | &check; | &check; |
 <!-- compat ends -->
 
 
diff --git a/compat.csv b/compat.csv
@@ -1,7 +1,6 @@
 runner,5,6,7,8,9,10,11,12
 macos-11,,&check;,&check;,&check;,&check;,&check;,&check;,&check;
 macos-12,,&check;,&check;,&check;,&check;,&check;,&check;,&check;
-ubuntu-18.04,&check;,&check;,&check;,&check;,&check;,&check;,&check;,
 ubuntu-20.04,,,&check;,&check;,&check;,&check;,&check;,
 ubuntu-22.04,,,,,&check;,&check;,&check;,&check;
 windows-2019,,,,&check;,&check;,&check;,&check;,&check;
