CI: ignore all .rst files in the repository (#5523)

Following up on #5387, I think we should also ignore all `.rst` files in
the repository when we decide whether or not to run the CI workflows.

GitHub Actions syntax taken from the examples
[here](https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions#patterns-to-match-file-paths)
(see `'**.js'` example). Azure syntax to be tested.

If we merge this before #5522, we can test it (i.e., test that CI is
skipped) in #5522 after rebasing there.

.azure-pipelines.yml

@@ -13,6 +13,7 @@ pr:
   paths:
     exclude:
     - Docs
+    - '**/*.rst'
 
 jobs:
 - job:

.github/workflows/clang_sanitizers.yml

@@ -7,6 +7,7 @@ on:
   pull_request:
     paths-ignore:
       - "Docs/**"
+      - "**.rst"
 
 concurrency:
   group: ${{ github.ref }}-${{ github.head_ref }}-clangsanitizers

.github/workflows/clang_tidy.yml

@@ -7,6 +7,7 @@ on:
   pull_request:
     paths-ignore:
       - "Docs/**"
+      - "**.rst"
 
 concurrency:
   group: ${{ github.ref }}-${{ github.head_ref }}-clangtidy

.github/workflows/cuda.yml

@@ -7,6 +7,7 @@ on:
   pull_request:
     paths-ignore:
       - "Docs/**"
+      - "**.rst"
 
 concurrency:
   group: ${{ github.ref }}-${{ github.head_ref }}-cuda

.github/workflows/hip.yml

@@ -7,6 +7,7 @@ on:
   pull_request:
     paths-ignore:
       - "Docs/**"
+      - "**.rst"
 
 concurrency:
   group: ${{ github.ref }}-${{ github.head_ref }}-hip

.github/workflows/insitu.yml

@@ -7,6 +7,7 @@ on:
   pull_request:
     paths-ignore:
       - "Docs/**"
+      - "**.rst"
 
 concurrency:
   group: ${{ github.ref }}-${{ github.head_ref }}-insituvis

.github/workflows/intel.yml

@@ -7,6 +7,7 @@ on:
   pull_request:
     paths-ignore:
       - "Docs/**"
+      - "**.rst"
 
 concurrency:
   group: ${{ github.ref }}-${{ github.head_ref }}-intel

.github/workflows/macos.yml

@@ -7,6 +7,7 @@ on:
   pull_request:
     paths-ignore:
       - "Docs/**"
+      - "**.rst"
 
 concurrency:
   group: ${{ github.ref }}-${{ github.head_ref }}-macos

.github/workflows/ubuntu.yml

@@ -7,6 +7,7 @@ on:
   pull_request:
     paths-ignore:
       - "Docs/**"
+      - "**.rst"
 
 concurrency:
   group: ${{ github.ref }}-${{ github.head_ref }}-ubuntu

.github/workflows/windows.yml

@@ -7,6 +7,7 @@ on:
   pull_request:
     paths-ignore:
       - "Docs/**"
+      - "**.rst"
 
 concurrency:
   group: ${{ github.ref }}-${{ github.head_ref }}-windows