ci: Replace rockylinux with almalinux

rockylinux's package manager infrastructure sometimes is broken.

```
+ dnf install -y cargo tar gzip
Rocky Linux 8 - AppStream                        34 kB/s |  10 MB     05:05
Errors during downloading metadata for repository 'appstream':
  - Downloading successful, but checksum doesn't match. Calculated: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855(sha256)  Expected: 0087a37e2eca36cac787004b7945dbbcc2dba4dd776e50d6d1461bfe2cc30434(sha256)
  - Downloading successful, but checksum doesn't match. Calculated: 839488ebc08446a096a893996ed23eac321ac166724cd8c5d9092057834d2d79(sha256)  Expected: b31374fa4a7a732aae643cea0699f714480387baad33061b2fae4530d380a988(sha256)
  - Downloading successful, but checksum doesn't match. Calculated: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855(sha256)  Expected: 649280a7614f8a30d3fcc03560247b64906a6cf26024e090c0272766e671e5f3(sha256)
Error: Failed to download metadata for repo 'appstream': Yum repo downloading error: Downloading error(s): repodata/b31374fa4a7a732aae643cea0699f714480387baad33061b2fae4530d380a988-updateinfo.xml.gz - Cannot download, all mirrors were already tried without success
```

```
+ microdnf install -y cargo tar gzip
Downloading metadata...
error: cannot update repo 'baseos': repomd.xml parser error: Parse error at line: 1 (Extra content at the end of the document
)
```

Author: taiki-e

.github/.cspell/project-dictionary.txt

@@ -1,3 +1,4 @@
+almalinux
 binstall
 coreutils
 distro
@@ -15,7 +16,6 @@ nextest
 protoc
 pwsh
 quickinstall
-rockylinux
 shellcheck
 shfmt
 syft

.github/workflows/ci.yml

@@ -102,10 +102,10 @@ jobs:
           - debian:11-slim # glibc 2.31
           - debian:12-slim # glibc 2.36
           - fedora:latest # glibc 2.37 (as of fedora 38)
-          - rockylinux:8 # glibc 2.28
-          - rockylinux:8-minimal # glibc 2.28
-          - rockylinux:9 # glibc 2.34
-          - rockylinux:9-minimal # glibc 2.34
+          - almalinux:8 # glibc 2.28
+          - almalinux:8-minimal # glibc 2.28
+          - almalinux:9 # glibc 2.34
+          - almalinux:9-minimal # glibc 2.34
           - centos:7 # glibc 2.17
           - alpine:latest # musl 1.2.4 (as of alpine 3.18)
     runs-on: ubuntu-latest
@@ -118,16 +118,16 @@ jobs:
           apt-get -o Acquire::Retries=10 -qq update
           apt-get -o Acquire::Retries=10 -o Dpkg::Use-Pty=0 install -y --no-install-recommends cargo
         if: startsWith(matrix.container, 'ubuntu') || startsWith(matrix.container, 'debian')
-      - name: Install requirements (fedora/rockylinux)
+      - name: Install requirements (fedora/almalinux)
         run: |
           set -euxo pipefail
           dnf=dnf
           if ! type -P dnf &>/dev/null; then
             dnf=microdnf
           fi
-          # tar and gzip are required for actions/checkout on rockylinux:*-minimal
+          # tar and gzip are required for actions/checkout on almalinux:*-minimal
           $dnf install -y cargo tar gzip
-        if: startsWith(matrix.container, 'fedora') || startsWith(matrix.container, 'rockylinux')
+        if: startsWith(matrix.container, 'fedora') || startsWith(matrix.container, 'almalinux')
       - name: Install requirements (centos)
         run: |
           set -euxo pipefail

README.md

@@ -132,7 +132,7 @@ See the linked documentation for information on security when installed using [s
 
 ## Compatibility
 
-This action has been tested for GitHub-hosted runners (Ubuntu, macOS, Windows) and containers (Ubuntu, Debian, Alpine, Fedora, CentOS, Rocky).
+This action has been tested for GitHub-hosted runners (Ubuntu, macOS, Windows) and containers (Ubuntu, Debian, Alpine, Fedora, CentOS, Alma).
 To use this action in self-hosted runners or in containers, at least the following tools are required:
 
 - bash